Seriously, name me a single video-game movie that wasn't complete balls.
That comes down to taste. And specify a movie that isn't "complete balls". Doom is a popular example. The movie has nothing to do with the game, exept that it happens on Mars. But it has big guns, big sweaty badass marines, blood and monstars. So it might not be a good movie, it is
very entertaining.
Resident Evil movies? Zombies. Plain and simple, and always entertaining.
Tomb Raider movies? Well, they have a number of good things. I'll list a few; Angelina Jolies breasts, Angelina Jolies ass, Angelina Jolies legs, Angelina Jolies lips, Angelina Jolies eyes, and so on. And ofcourse lots of shootin' and action and stuff. But mainly Angelina Jolie is the thing that makes the movie entertaining.
I havent yet seen Silent Hill, so I can't personally say anything about it. But what I have heard and read, it is a good movie if you are familiar with the game. That could make it actually good movie, but as I said I need to see it first.
Video-game movie that
is complete balls, I'll risk my sanity and name one; Bloodrayne.

So while there are no "good" game based movies, there are those I like to watch every once in a while. Usually when I have a hangover and I need to "clear my mind" (name a video-game movie that requires you to think?).