The Dead Rising movie was fairly decent as far as being true to the source material. I was definitely surprised, as I was expecting either a generic zombie movie cashing in on a popular license, or a film that completely misinterpreted the actual draw of the games. But they pretty much nailed it. It has the mix of B-movie plot, government conspiracies, and over the top zombie slaying mixed with goofiness that you would expect from the series. Actually, it felt a lot more true to the tone of the games than DR3 did. There isn't really much in the way of psychopaths though, outside of a murderous biker gang though.
For what little he was in the movie, Frank West was much more of a douche and a cartoon character than the first game, but pretty much in line with his appearance in the sequels. He was entertaining, and Rob Riggle was well cast for how that character was portrayed in the movie.
Unfortunately, where the movie fails is that it is a movie and not a game. So instead it's just 2 hours of Dead Rising story, which is really not what you come to those games for.
