Either you like Stiller's humor, or you don't. Ben Stiller is one of those actor's, who people love or hate.If you have enjoyed his humor before this movie,then you won't be disappointed.If you think he's a moron then that opinion will continue. Personally I think the guy is hilarious, as well as this movie.This may not be his funniest character to date,(i.e. his roles in Dodgeball, Zoolander,Mystery Men,There's Something About Mary, etc. etc.)but the supporting cast picks up the slack.Robert Downey JR flat out steals the the show, I was not expecting anything that funny to come from him.Although his character was set up to be funny,(an actor who's so serious about his craft he has his skin dyed to make him look black, and refuses to break character even after takes)I just didn't know what to expect. Danny Mcbride delivers with another performance along the line's of his others.( his roles in Hotrod, Pineapple Express,Drillbit Taylor) And although I as far from a fan of Tom Cruise as you can get, but he was very funny. Jack Black's performance wasn't anything spectacular but I think part of that had to with being over shadowed.Bill Hader, and Jay Baruchel were also funny.