Self explanatory.

Vanessa Williams on David Letterman.

Cybil Shepard on Jay Leno.

Jenna Elfman on Conan.

friendsoffur. was jenna elfman wearing underwear? do you have any caps? thanks

I only have the video tape of Jenna Elfman. I don't remember seeing any fur.

What kind of an upskirt, bushleague? White triangle? Entire crotch? Mmm, Cybil Shepard. She always wore the shortest skirts. Celebrity upskirts rule. Here's one, although not really a talk show. Sharon Stone on SNL.

Tori Spelling on Leno, she had her right leg crossed over her left leg and she was leaning to her left to talk to Leno. And her pussy lips were visible briefly between the back of her legs everytime she leans over to Jay. I saw a picture on Celebrity Skin or Celebrity Sleuth.

I think it was on Mexican television, but Mariah Carey managed an upskirt with no panties. I have only seen caps, but you can see someone coming into shot and indicating the problem to her, and Mariah tugging the hem down.

Tori Amos plays piano while basically sitting side-saddle. She usually wears Jeans, but I saw a pic of her with a dress on and no skivvies. You could plainly see her red pussy.
Oh, not a talk show - but....
And I DL'd a video from an Australian or British soccer show, where a girl stood up to cheer her team. Her skirt was so short, when she stood up, it didn't cover her bare pussy. Actually, that video was shown to another audience, who all went Oooh and Aaah when it happened (a la America's Funniest Videos).