There'll never be another like him. What a true classic.

When you get a guest who's in their 80's, you treat them like a legend and just let them do their thing. Good job by Conan here.

Oh man, i was crying with tears laughing watching this.....Conan is fantastic and you can see his real love of Jonathan Harris.....it's not fake, it's fantastic to watch this.

Oh Jonathan! What a funny wonderful man. You know he was having the time of his life hamming it up. One of the most loved tv characters of all time. RIP Jonathan.

I was lucky to have met him at a rare signing in LA. What a gracious man. I asked him to do a "How dare you," and he obliged. Everyone was so grateful to him. I did an A-Z allieration of robot insults for a talent show. Told him a few of mine, and he roared. What a lovely man.

He had them all in the palm of his hand.The sign of a great actor

He was absolutely brilliant. I had a Lost in Space robot as a kid but I wanted a Dr. Smith figure....never got one. "Oh, the pain...the pain!" Loved him...classic villain you love to hate. Godspeed Jonathon Harris, you did good!

NEVER FEAR SMITH IS HERE

it's true, harris was allowed to rewrite his lines and did so all the time, he literally created what made lost in space a hit. a boy, a robot, and dr. smith.

What a treasure Jonathan Harris was...

Thank you for this clip. Jonathon Harris was simply wonderful. What a fantastic voice he had. Sheer joy!

I love listening to Bill Mumy's tales of working with Jonathan Harris. He created the character of Jonathan Harris who then created the character of Dr. Smith. He disliked his original Bronx accent so much that he adopted a proper British accent by watching British B movies. He was married to his high school sweetheart and had one son. Just a quick look at his life via wikipedia is fascinating.

"Irwin Allen was not known for SPENDING MONEY!!!" ROFLMFAO!!!!! :)

I loved this guy, he was a real classic actor.

Harris' Dr. Smith took over that show as completely as any supporting character has ever taken over any series. Along with Fonzie, Urkel, etc. Always heard a touch of Dr. Smith in Frasier Crane.

Mr. Harris was an incredibly gracious and talented man. As an adult today, some of the aliens may look a bit fake and clunky, but when watching them as a kid; we all thought that they were totally believeable and cool! Also old fashioned grainy TV technology hid the flaws.

I'm 67 and still quote his character... Miss him.

83 and still totally on his game, great fun!

"Oh, William my boy.....the pain....the pain..."

Iconic voice! I could listen to him talk n talk n talk! RIP Jonathan Harris.

A real character :) A very intelligent and interesting person. One of a kind.

I adore this interview. It catches that most wonderful fan experience of all...getting to meet one of your childhood heroes and finding out they are even more fun IRL than they are in person!

This man was a national treasure.

Jonathan still had that bit of Zachary Smith left in him during his interviews.

sadly, his style of speaking is a lost art forever. people nowadays have grown up glued to their cell phone, unable to put together intelligent, articulate and interesting sentences like this great man.

Wow! I have never seen a guest so thoroughly take command of the stage the way Jonathan Harris did. An amazing performance. This guy was absolutely everything you wanted him to be, everything you hoped he would be, and so much more. And to leave Conan pounding the desk as he laughed so much harder than he thought he would, my hat is off. Damn that's funny!

Flaming but adorable! My favorite insult to the robot was, HOW DARE YOU SPEAK TO ME IN THAT FASHIONNNNN, YOU FRIGHTFUL FRACTIOUS FRUMP!!! Priceless.

Haha love this guy. Miss these kind of actors

Jonathan was a great guy would've loved to meet him for sure

What a character. Would loved to have met him.

What a true star. Elegant, eloquent and witty. Despite the movie version failing miserably (it's so bad it's nearly back out the other side to good again) he was still gracious enough to flag wave for it. No political agendas or virtue signalling. How refreshing. An actor who turns up, does the job impeccably by all accounts, and then lets us enjoy it without all this BS on the publicity circuit we've had recently.

Elegance. You don't see it anymore.

The writers actually intended to kill off Harris' character shortly after the Robinson's were in space but changed their minds when they realized the script potential of a feckless, sinister character and his continued interaction with the other cast members, especially the Robot, who he was always trying to subvert to his own sinister whims. It was a great idea (it was if you weren't Guy Williams, that is). This was suppose to be Guy's show. But it was Harris' character who began getting the lion's share of screen time and lines, with Williams' character (more times than not) taking a back seat to Harris'. This didn't sit well with Williams and would become a source of friction between the two of them. This wasn't Harris' doing, of course, and he said he always felt self-conscious about it. Harris once tried to approached Guy about it but Williams brushed it aside by saying something along the way of, "Hey... I'm still getting paid."

This was hilarious - he's a hoot.

It’s not enough to say, he had them eating out of his hand!

Jonathan was Lost in Space. The show wouldve been cancel after a few episodes had it not been for him!

This Gentleman will always be DoctorSmith,great actor

Omg this actor was a treasure

What a delightful guy! This interview was a pleasant surprise

The Twilight zone and Lost in space two of the greatest shows on television

Seeing Johnathon Harris and Cheech Marin on the show was marvelous! He was OUTSTANDING as Dr. Smith! RIP Johnathon Harris.

"Oh, the pain, the pain!" .... that line is forever etched into my mind...

Jonathon Harris was fantastic as Dr. Smith,he MADE the show ! Funny as hell,what a great show ! Great interview,what a tactful,professional actor. Thank You for posting this. Shame on the lame robot for insulting the lovely June Lockhart.😠

What fun Jonathon Harris is! He seems to be enjoying it to the hilt. It's hard to imagine that he was once a Jewish kid from the Bronx who was supposed to find his greatest success as a pharmacist. Somehow he reinvented himself, found his voice and created a unique career for himself in show business.

great interview love Jonathan Harris Love Doctor Smith love Lost in Space I've been watching it since I was 10 years old and it is still on now and I still watch it I am 53 years old

I love this guy.

Oh, just too much! He was hilarious!

There was only one Dr Smith....SILENCE!!! You cowardly clump! LOL

Great man!

Wow! What a charismatic fellow! What great energy at 84. Vale Jonathan Harris!

Good memories,thanks Dr Smith.

Why wasn't Harris on more TV shows in the 70s and 80s. What a drawing card for a series!

This is too much- absolutely love JohnathanHarris!

I always thought he was a gay Brit but he was born in the Bronx and married his childhood sweetheart. He affected a British accent because he was self-conscious about his Jewish Bronx drawl.

God bless Jonthan Harris, RIP!!!! Just a delight of an actor and person. The fact that he was a Russian Jew from NY and transformed himself into this archetypical WASP demonstrates his brilliance. I thought he was British for years until the Internet, whereas as a kid, I thought Richard Dawson was American with a bad "Dick Van Dyke Cockney" affected British accent. I would have loved to have seen him in more television roles (only as guest appearance in Bewitched comes to mind) as well as on stage / Broadway. Magnificent!!!! And how he was able to transform what a despicable villain role into the star of the show as far as I am concerned shows not only acting brilliance but the shrewd ability to keep his job!

You gotta love the man.

He's just beautiful here - love Jonathan's sense of timing and sense of humor

He is from the Bronx which makes this all the more insane. Love this.

I loved him and Michael Rennie on th Third Man.

I am so glad this video was presented. I was speaking about this appearance & commented this LATE NIGHT WITH CONAN O'BRIEN. Johnathan Harris was a gem of an actor. He carried Dr. Zachary Smith to a T in "LOST IN SPACE" I am glad that CONAN brought out PIMPBOT the robot. I was in stitches 🤣 "Never Fear Smith is Here", "Oh The Pain". I miss him so much. Great job Johnathan Harris.👋👋👋👋👋👋👋👋

What a charming actor brilliant

I grew up watching the original series in the 1960s. He was brilliantly funny during this broadcast -- I laughed and had tears in my eyes from his self-deprecating humor!😂

Serious William Hartnell vibe when he got onstage.

I miss him. He was born with a thick Yiddish accent and worked hard to create his polished accent. Love him. What a great soul!

Love this guy.

Lost in Space was an absolute classic , Loved watching it back in the day!

Perhaps my favorite talk show appearance of all time.

One of my top favorite shows ever!! Thanks for sharing!

Wow, he aged beautifully. Such a handsome man and remarkable talent. ❤

The cadence of his delivery is so interesting to me!

I lived for Lost In Space when I was a kid in grade school during the 1960's. Jonathan Harris was a class Ham and stole the show both here and on Lost In Space as himself, this was too funny. Never Fear Smith Is Here ! --- LOL !

Such an entertainer. So fantastic listening to him talk.

I really loved seeing this elderly gentleman thoroughly enjoying himself during this very special moment. I am sure he replayed this friendly interview a thousand times in his mind.

Thank you for sharing this clip. This put a massive smile on my face when I watched it. What a wonderful character Mr Harris was... Love him...

Thanks for the upload, this is incredible!

I agree with Conan about those cornball monsters in Lost In Space. But Smith played his part impeccably well and was without a doubt the best actor by far on that show.

What a voice !!!!!!

Dr. Smith took over the Conan show.LOL. "Brilliant as always my boy."

That unmistakeable voice of his..

I built a robot in 1963 out of card board boxes and won the Halloween costume grand prize at my school. But soon I will be dead and no one will care. But if you care just think of me that I win the Lottery and I will think of you getting what you want. Whaioiii

Bill Mumy, who played Will Robinson, said he'd meet with Harris before filming began each day, who basically threw out the script, and had him ad-lib his lines, something like, "Young man, pay no attention to that, here's what we're going to do instead!"

Great acting teacher for many actors.

When the kids of the 1960s were growing up, They had Dr Smith with countless other talented actors. Today the kids have Transgender hour at local grades 1thru 6. How things have changed. Heaven help us. We went from 31 flavors back then of Baskin Robbins, To now 74 genders its like living in a mad house.

tv legends like Harris can never happen again. the tv industry has changed so much for so many reasons, and many of them wonderful changes, but the "classic" era is gone, when geniuses were figuring out how to do things. Much like the origins of film in the silent era and those legends.

GLAD TO SURE MY NAME WITH THIS LEGEND

All I know about Jonathan Harris was lost in space reruns while growing up in the 70s and 80s. Just listening to him though, he sounds like he would have been the epitome of excellence in any play, especially Shakespeare!

They absolutely broke the mold with Harris.

I remember reading the story about how he ended up getting written into the show. When he was approached to do the show with Irwin Allen, he proposed to them to write him into the show with the words... 'Special guest star Jonathan Harris" So whenever you watch any of the Lost In Space shows all the way through the entire series you will see him cast as that. This way he secured himself as a character all the way through and not just somebody who would be written out after a few episodes. An absolutely incredible actor Who definitely not only commanded Conan O'Brien's stage, but for all the performances that he did throughout the lost in space series..and so glad we have his memories via the reruns to watch! You can definitely see him physically look at the robot that Conan O'Brien had brought out onto the stage. It almost seems like he wasn't happy with the way the character was throwing the offensive words. It almost seemed like an insult but he rode along with it. RIP Jonathan Harris. Gone but not forgotten.😢😢😊😊

Lost in Space was the most repeated show in Australia for years. Much loved series down under!!!

Wonderful!

Fantastic

Just awesome. I love this man and loved that character, Dr. Smith.

What a guest!!!

I never missed Lost in Space growing up in the 60's 70'sLoved Dr.Smith,from Laredo,Texas ❤

A gentleman , excellent .

🌸 I Just Adored Jonathon Harris. I Adored Him.. I Still Adore Him.. I Will Always Adore Him. The Late, Very Great, Mister Jonathon Harris Lives On!!

Dr Smith was an iconic character and he was indeed deserving of an Emmy.

Love this !!! He was great !!!

Jonathan Harris was the man who saved the show.

I heard Jonathan Harris was the model for Baby Stewie on Family Guy (first season was a year after this interview)