The Punisher

A simple concept for a plot, but it works.  What happens is that Castle (who turns into the Punisher by the end of the movie) has his whole family killed, and the rest of the film is spent with him getting his revenge.  I thought the film started off fairly well, and the massacre of Castle's whole family (family as in including his cousins, parents etc, it was a family reunion) was quite shocking, especially when you consider the fact that it wasn't his fault that someone's son died.  While it's cool that the protagonists survives whatever is thrown at him, sometimes you do have to wonder if he has some sort of supernatural abilities because a lot of times, he is hurt pretty badly and fatally.  I think the film's darker and more serious tone helped the character.  You feel the injustice of all the film's events and can't wait until you see the antagonists suffer for their crimes.  Some of the plot elements you could guess quite easily, such as artificially creating the affair to get the antagonist to kill his best friend and wife.  I think it's quite a good action film that wasn't boring at any point in the film.