Continuity mistake: When Dennis comes out of the shower dressed only in a towel to find Maya on his bed, she greets him and gestures with her left hand, but the next quick frontal shot of her shows her gesturing with her right hand.
Continuity mistake: While Dennis and Gordon are speaking about the show tickets from the night before, the cigarette Gordon is smoking is in his mouth in the shots over his right shoulder and gone in the frontal face shots.