I actually really liked the first Resident Evil. Even though its based on a video game I found it to be a really good stand alone zombie horror movie. Unlike Silent Hill which didnt really make any sense to me...
For all of you Shaun of the Dead fans out there you really need to check out Fido if you havent heard of it before. Here is a link:
http://www.imdb.com/title/tt0457572/ Its a touching story about a boy and his 'pet' zombie. As an added bonus its Canadian too!