Emma Stone, Andy Samberg and Nick Cannon Appearing on 30 Rock

Emma Stone, Andy Samberg and Nick Cannon will guest-star on 30 Rock, Tina Fey tells Entertainment Weekly.
The trio will appear in the Jan. 26 episode, in which Jenna (Jane Krakowski) stars in a movie called Martin Luther King Day — "from the producers of Valentine's Day and New Year's Eve," Fey says.
Check out photos from 30 Rock

"I want to lay claim to that bit before anyone gets it," she tells the magazine. "It's a movie that has everyone in the world in it."
Stone, Samberg and Cannon will be seen in the trailer for the fictional (but totally needs to be real) film.
Season 6 of 30 Rock premieres Thursday at 8/7c on NBC.