Say hello to the four new recruits in Judd Apatow's comedic army.

Joining a star-studded cast that already includes Paul Rudd and Leslie Mann in their respective roles as Pete and Debbie from 'Knocked Up' are Chris O'Dowd of 'Bridesmaids'; Lena Dunham of 'Tiny Furniture'; Wyatt Russell of 'Cowboys & Aliens'; and Charlyne Yi, who also had bit role in 'Knocked Up.' Not only has it been confirmed that Yi will be reprising her previous role, but it appears that O'Dowd and Dunham will be play employees at the record label that Rudd works at, Russell will play a hockey player, and we can also expect appearances from Albert Brooks and Megan Fox in some fashion.

While we still haven't heard what the upcoming movie will be about, we do know that Apatow's latest will be set in the world of his 2007 film, 'Knocked Up,' and may or may not be titled 'This Is Forty.'

No word yet on whether Seth Rogen and Katherine Heigl will return, but hit the jump to see what Apatow had to say about why he decided to revisit the world of 'Knocked Up.'

"People were really taken by [Pete and Debby]," said Apatow. "I think people really emotionally connected to the challenges of their marriage and I thought, You know, there were only a small portion of the movie. I'm a television writer, so I always want another episode. I always want another 80 episodes. That's why after 'Forgetting Sarah Marshall' we said, "What else can we do with this character Russell Brand has created here?" I felt that way about Pete and Debbie from 'Knocked Up.'"

We've still got a while until its December 2012 release date finally rolls around, and after being a tad disappointed with 'Funny People' and its endless string of weiner jokes, we're kind of happy to see Apatow returning to a successful formula that hopefully involves more beard jokes.

What do you think: Sounds like a solid cast so far, or what in the hell is Megan Fox doing in this?

[via Variety]