The engine and 3d character art sucks the balls, too :< It runs like shit on my computer - which can run doom 3 - And this one dude made some character head models for the game that not only blow away Bethesda's, but are lower in polycount as well. (
http://home.wnm.net/~bgriff/MW_Face02_Download.html )
Still a good game, though I would really recommend getting the XBox version if you don't have a thompson drive and if you don't mind not getting to use the cool Rheddhead models :<