You all know him. Superbad, Juno, Nick And Norah's Infinite Playlist, several others I can't remember because I haven't seen them. Of the three specifically mentioned, Mike Cera has proven himself to be a completely HORRIBLE actor. COMPLETELY! A) Facial Expressions. Cera's facial expression are completely unconvincing. His face literally does not change throughout any of his movies. In "Nick And Norah's Infinite Playlist" he was begging forgiveness from this girl he is supposedly totally in love with and not a flicker alter in his face. Superbad, he is fighting with his best friend over getting booze and getting laid, and again, his face expression hardly alters. B) Voice. His voice has NEVER changed in tone through out any of his movies. he makes false tones, which are not convincing in the least. He barely raises his voice, his tone stays the same boring average speaking voice. I highly doubt he could ever pull off even simple accents as well, such as a southern drawl. C) Gait. No matter the situation, Michael Cera walks in the same gait. Except for his running, he always walks just like he is casually walking down the street. How you walk is a convincing part of acting that shows how a character is feeling, and Cera totally ignores that. I do not know how this guy still has a job, he is completely horrible!