I didn't realize he/she was in that

Rachel Ray played Geri on 'The Facts of Life.'

 

The kid who played Paul Pfeiffer in "The Wonder Years" grew up to be Marilyn Manson.

The kid who played Mikey in the Life cereal ads died from eating pop rocks and chasing it with Coca-Cola.

 

Jennifer Anniston's sister Kate was the baby at the end of the movie Blue Lagoon.

 

Derek Sanderson had a role in Paul Newman's Nobody's Fool where he drank too much and puked in the bar. The next day Newman's character was supposed to see Sanderson sleeping in the alley. The scenes were cut from the film.

 

John Cusack was in Broadcast News. He was the guy (with back to camera) who storms out of the newsroom when the layoffs are first announced.

 

The Electric Company was full of them. Morgan Freeman as Easy Reader, Joan Rivers as the narrator in "The Adventures of Letterman," Rita Moreno ("Hey, you guys!!!!!), Bill Cosby.

 

Bill Murray

 

Piven was also in "Lucas" and "Singles"

 

William Forsythe is not a major star, but I'm posting this anyway because it's hilarious.

 

Piven - ANOTHER Blackhawk Down guy.

 

He also played the top henchman vampire in the original "Buffy the Vampire Slayer."

 

Yep. Ron Eldard as well.