Or Danny Thomas as Danny Williams.
Lyle Talbot had a bit part in Green Acres where he played Senator Lyle Talbot.
Watch the last episode again and then tell us whether he ever played a character named Bob in Newhart.
Tom Selleck as Thomas Magnum in Magnum P.I.
Amy Brenneman as Amy Gray in Judging Amy
James Garner as Jim Rockford in The Rockford Files
James Garner (again) as Jim Egan in 8 Simple Rules
John Ritter as Jack Tripper in Three’s Company
Paul Reiser as Paul Buchman in Mad about You
Jerry Paris as Jerry Helper in The Dick Van Dyke Show
Fran Drescher as Fran Fine in The Nanny
Ellen DeGeneres as Ellen Morgan in Ellen
Close but not exact:
Katey Sagal as Cate Hennessey in 8 Simple Rules
Georgia Engel as Georgette Franklin Baxter in The Mary Tyler Moore Show
30 Rock had a bunch of these: Elizabeth Stamatina “Tina” Fey as Liz Lemon, Tracy Morgan as Tracy Jordan, John Lutz as Lutz, Grizz Chapman as Grizz, John Alec Baldwin as Jack Donaghy…
(okay, not that last one.)
And for a list… (I waited until after people stopped posting for a few days)
Season 2 of Good Omens: Maggie and Nina are played by Maggie and Nina.
Our discussion of Play it Again, Sam in another thread made me realize that Woody Allen played Allan Felix in that. And please note that it’s not a first name/last name thing, because Woody’s birth name is Allan Stewart Konigsberg (he changed it to Heywood Allen legally when he was 17). I don’t kniow why he changed the “a” to an “e”.
Steve Buscemi’s character in Desperado is Buscemi.
Jackie Chan played various characters named “Jackie” in several movies, although some of those (I think) only had him as “Jackie” in the subtitles.