I think that some VG based movies could turn good! PoP should be one of those, Jack gyllenhaal (or whatever is name is) is a good actor.
The second tomb raider movie, is not bad. It's not a master piece, but still an okay movie if you like lara croft.
All fighting VG based movies are terrible: Street fighter, mortal kombat, dead or alive: pure shit! Mario brothers too!