This is a clip from "New Beginnings", the 6th episode (59th overall) of the fourth season of the 1979-93 CBS drama "Knots Landing". This is a historic episode as it is the last crossover episode between "Knots" and its' parent series it spun off from: the mega popular 1978-91 drama "Dallas". For the rest of the shows' run, "Knots" characters would occasionally cross over to "Dallas", but after this episode, no more "Dallas" characters crossed over to "Knots". This episode also ends a crossover plot that started on a "Dallas" Season 6 episode "Jock's Will". This (and "Jock's Will") aired originally in a special Friday night 10:00 time slot (instead of "Knots" customary Thursday night slot) on Friday, October 29, 1982.
Gary Ewing (Ted Shackelford) has returned to his hometown of Dallas for the will reading of his late father, oil magnate John Ross "Jock" Ewing, Sr., who perished in a South American helicopter crash in January 1982 (Jim Davis, the actor who played Jock on "Dallas" died from cancer shortly after "Dallas" wrapped up production of season four on April 26, 1981). Gary has received $10 million in a trust set up by his father with an allowance, leading Gary to resent that fact that even in death, Jock still didn't trust him.
His spirits are considerably lightened when his current side chick girlfriend/neighbor Abby Cunningham (Donna Mills) flies into Dallas to surprise him. At this time, Gary is still bemoaning the loss of not only his father, but the end of his marriage to his first love Valene (Joan Van Ark), who is in town to promote her first novel "Capricorn Crude", a fictionalized account of all the scandals of the Ewing family.
In his hotel room, after a bit of horsing around with Abby, Gary gets an unwelcome visit from his older brother John Ross "J.R." Ewing, Jr. (special guest star Larry Hagman), who comes to make sure that Gary is leaving Dallas after he says goodbye to their mother.''
After a few snide comments about Gary and his inheritance to a slightly amused Abby, Gary finally finds the courage and strength to stand up to his hated older brother, telling him that he doesn't need any charity from him or his hotel room (that J.R. paid for). Abby looks amazed and is slightly turned on by Gary's sudden resolve.
Getting the hint, J.R. does leave, but not before thanking Abby for "doing him (Gary) a world of good" and wishes that Jock "could have lived to see this day. Gary with guts, finally." J.R., for the first time, seemingly shows Gary equal footing as a Ewing and had earned his respect as a man.
This is a crucial moment in "Dallas" and "Knots" history as Gary finally stands up to J.R., who, along with Jock, tortured and bullied Gary all through childhood and adolescence, causing him to become an alcoholic, abandon his family, and half no self-assurance as a man. And that was before "Dallas" even aired the first episode in 1978.