"don't you think he's a bit rubbish?" "is that you David!?" I laughed so hard HAHA!

Hahahahahahah David is genius. "Freeda." "David Eccleston." "Don't you think he's rubbish?" Hahah

"DON'T LAUGH AT ME!" David's completely amazing.

"DAVID ECCLESTON WHO YOU DO IT WITH" SOUNDED SO WRONG 😂

My favorite part was Freema just laughing hysterically when Derek was uncovered

I love it when he's saying, "Don't laugh at me" and sounding upset. Too funny.

I LOVE FREEMA'S VOICE. And how she calls him love. and how cute they are

Oh gosh, I think I died laughing just a bit........ David Eccleston..... XD

"You know, David Eccleston, who you do it with..." GENIUS!

This is just one more reason to add to the list of why I am confident David Tennant is a genuinely great guy in real life, not remotely fake or puffed up or anything. I'd give anything to meet him.

"Isn't it?...When your?...Is it?...........eh When your?...Is your?...*laughs* Are you alright Derek?" I completely lost it lol

Knowing that it was David, I recognized his voice immediately, but I'd never have known otherwise. He's hilarious, I really, really think so. Best Doctor ever, and I've seen some of his work on Blackpool and Casanova and he deserves to get quite a bit more work. I love listening to him go off. "Don't laff at me. Don't laff at me." "Don't you think he's (David Tennant) a bit rubbish?" "Is that DAVID?!!!" Funny. Good stuff.

"Don't laugh at me!" rofl

"Daleks: aim for the eyestalk. Sontarans: back of the neck. Weeping Angels: Don't blink! Derek the Weirdo...run. Just run."

He was doing really well! He let his accent slip a little though, and I think that tipped her off. ;-)

David Tennant is my new favorite actor. He was one of the best senses of humor I have seen any actor have, no only with others but with himself too.

He said (talking about himself) "Don't you think he's a bit rubbish?" XD

HAHAHA "Is that you David?" I love how she's suddenly just like "Wait a minute..."

Isn't Derek the name if the guy he prank called on Graham Norton? "Derek, its the doctor. You had your chance YOU BLEW IT!" *hangs up phone*

Lol xD David Eccleston

I never noticed how lovely freeman's voice is, it actually is very nice. I love u, freema and david!

"David Eccleston" The perfect curveball

I started dying when he started stumbling over his words.

that voice is totally david tennant, im surprised freema didnt get this is immediately! :D

"I was getting the chills... he was taking it a bit too far" - My thoughts exactly during Secret Smile, Harry Potter and the Goblet of Fire, Waters of Mars, Politician's Husband and I'm sure Jessica Jones as well

*_I think he gave it away when he said "A bit rubbish" xD That sounded like him. But _**_4:20_**_-_**_4:40_**_...wow xD_*

I love Freema and David...

it is impossible to not love him more.

This never gets old! I've seen this SO many times and I'm always brought to tears from laughter. So incredibly creepy but albsolutely priceless.

I'm just wondering at which moment Freema started to suspect that it's David)

Oh god he's so FUNNY. xD "When you're... inn... when you're... DON"T LAUGH AT ME!"

I could tell it was him the moment he said hello XD

awwwn david checking if they're 'treating her right'

This David reminds me of what he was like in "Staged" which I love! He's basically a quirky individual.

I love how the radio dj knew it was David and made a few sly insults towards him: "yeah I think a lot of us did" "it's a shame we don't see them every Saturday"

This is possibly the best thing I've watched this year😹😹😹

OMIGERD I did not know it was David he was so convincing! Freema is right he does have a lot of talent

David can't keep from cracking up! lol

"You've got so many talents, David." *laughter in the background* XD

I lost it at 4:25, I can't evenxD

Isn't it? When your? Is it? When your? Is your? OMG i cant breathe

David has a very distinctive tone and demeanor.

3:50 oh my goodness that adorable little nervous laugh he did is so stinking cute! I love him so much!

"Where's Derek when we needed him?!" LOL This is so funny! For a second I can't recognize his voice until he got pitchy.. XD

"Don't laugh at me!" "i'm not, i've got a bit of hayfever at the moment" HAhahaha yeahhhhhh course you have ;D

I could tell it was David tennant

4:24 Jesus, I laughed so hard! "Are you alrght Derek?" DT is a legend

"Don't laugh at me" was brilliant, David was priceless in this interview.

Freema sounds so relieved it is amazing I laughed so hard first time i heard this it is so funny I keep coming back to it altho I have to I was slightly freaked out by it too but it shows yet another one of David's many talents

David is freaking great.

David Eccleston?

...David Eccleston HAHAHA

This clip is still classic. Gotta appreciate a man this cute and twisted. I felt for Freema, but she showed such class.

This may actually be too amazing.

This just NEVER gets old! I don't even know how many times I've listened to this now...

David, you naughty boy ;)

OH GOD! This made me so embarrased on behalf of Freema... But I loved it, I couldn't stop laughing. David Tennant is brilliant.

Hahahaha! "Do you...when you...is it...don't laugh at me!" xD Love it love it love it.

this is why david tennant is AWESOME

I DIED OF LAUGHTER!

3:26 I think Freema definitely sounded a bit scared with that "thank you..."

Haha, I love how David thought back and used "Derek" as a name xD my god, that's hilarious xD

Oh boy.... I love it when his voice goes right up into the rafters..... and the fact that the radio presenter was in on the act...

Man, I'd love to go around pranking people with David. He seems like he'd be an AMAZING accomplice.

What?!?! Derek was David! No one could guess :P

David as Derek the Weirdo is hilarious, I laughed so much!

Omigosh. SOOOO great! How hysterical. He is scary with many talents. David you're the best.

I thought Christian saying "yeah I think a lot of us did" in response to "Derek" admitting he preferred Eccleston, gave it away to Freema. Saw David impersonate Jon Pertwee's Werzel Gummidge on the Chatty Man show and Derek sounds very much like his version of Werzel.

Freeda lol

At 4:20 I heard David's voice I was like ohhhhhhhhhhhhh

this is fantastic! she has a fantastic voice for radio!!!!!

This was awesone!

That is the funniest thing I've ever heard! How weirded out do you think she was? I can just see her with the most awkward smile and totally scared out of her mind. That was fantastic.

ROTFMAO!!!!! I've heard this so many times and it STILL makes me laugh! :D Hearing this you could so tell how close the friendship between David Tennant and Freema Agyeman are together. I LOVE David Tennant to bits! :D And Freema seems like such a nice person too. :)

Great, just great. David Tennant is just great. Love him!

Oh my gosh! David is so amusing. I love that he does stuff like that

Omfg this hilarious. Love David and Freema aw aw.

Oh, my god. He's such a prankster. No wonder everybody loves him. He's a very funny person.

David and Freema are the best! He played that off so well it was great!

it doesn't matter how many times I hear this it makes me cry from laughing so hard. Oh how I would love to be one of David's mates.

She may have recognized his voice, but if she assumed it was him, and was wrong, that would have been embarrassing. One of my bosses prank calls all of the time. One time I thought it was him, and it wasn't. I felt pretty stupid, that's for sure.

0:13 It really, really was. 0:30 A SKYRIM FOR FREE MER! 3:09 The reason you're at this video. 4:45 After 2008, yeah, kinda.

Oh god this is so addictive to listen to lol what a great man

Brilliant brilliant man.

DEREK, THE FAN OH, YES.

I never knew David had a dark and amazing mind

i lov him even more

The character Malcolm from Planet of the Dead has got to be inspired by Derek... he’s even got the same accent David’s doing

4:47 Click on the subtitles to find out David's true identity...

Whenever I hear her voice I dont think of dr who, I think of Bizarre ER and expect her to happily describe a horrific accident at any moment

Amazing! I love David Tennant's sneak appearance!

David is so great.

It was really obvious!

Omfg this is the single greatest thing I have seen in a while. Freema, you so cute. And David you dorkhead idiot. I love you both to bits. :)

Thank you!

Brilliant! Love it! :)

I recognised him the second he started talking and I'm sure Freema did too

"Frida" is a really good sport.

I LOVE their dynamic and chemistry and friendship! Freeda and David Eccleston haha!

David is a freaking GENIUS !!!