'30 Rock': Emma Stone, Andy Samberg, Nick Cannon To Guest Star

You've seen "New Year's Eve" and "Valentine's Day" and now, "30 Rock" is tackling the popular star-studded flicks genre with their own: "Martin Luther King Day." And it's bringing in Emma Stone, Andy Samberg and Nick Cannon to help.

According to EW, Stone, Samberg and Cannon will appear alongside Jenna Maroney (Jane Krakowski) in a trailer for the fictional movie airing as part of an upcoming "30 Rock" episode. Stone, Samberg and Cannon are no strangers to sketch comedy shows like "30 Rock's" fictional "TGS." Stone has hosted "Saturday Night Live" on two occasions, Samberg is a regular on the show and Cannon appeared on Nickelodeon's "Up All Night."

The sixth season of "30 Rock" kicks off Jan. 12 at 8 p.m. EST and Stone is just one of the many famous faces popping up this year. Will Arnett will be back as Jack's nemesis Devon Banks, Kelsey Grammer will return as a fictionalized version of himself and "Flight of the Conchords" actress Kristen Schaal will recur as a new NBC page. Additionally, James Marsden will guest star in several episodes as a new love interest for Tina Fey's Liz Lemon.

"She's trying to loosen up a little bit by dating somebody who is a little more laid-back," Marsden said in a "30 Rock" promo. "That could either be good for her or ultimately bad for her."

Denise Richards will also appear in an early Season 6 episode. Richards will be playing a fictionalized version of herself: the spokeswoman of the idiots of the world.