The first one wasn't TOO bad, the rest was just garbage. The thing which annoys me the most is how they portray the characters from the actual games, it's like they don't do their research at all; just look at a name, picture(sometimes I don't think they even do that), hire a actor/actress and make a script for however they want that character to act.
I don't know why, but I still keep watching the damn things whenever there's a new one released. Guess I'm a sucker for punishment.
I like the first one because there was little resemblance to the game. The more game elements and characters they added in subsequent movies, the worse they became.