The only way Cera will ever be effective in film and acting is if he's typecast. I cannot see him in any role other than the shy, socially awkward, outcast teenager.I loved him in Arrested Development. Like loveloved<3. He's like the only person who hasn't signed on for the movie, but i sure hope he does!
Other than that, I thought he was adorable in Juno. I know he's the same type in every movie, but there was something about him in Juno. I don't think anyone could have done it better. Looks, and just his mannerisms too.
Sooner or later he's going to lose his edge and I think YEAR ONE is just the beginning. That movie looks to be a few hookers short of an STD.