It's horror movie season in the US and my favorite type is zombies. I also love campy B movies. Watching Dead Snow 2 right now and I think it ranks up there with Shawn of the Dead and Evil Dead 3: Army of Darkness.
Braindead/Dead Alive is always in my top horror movies. Evil Dead II: Dead By Dawn is a really good movie too. Both have an amazing number of fantastic one liners.
28 Days and 28 Weeks Later are great zombie movies that are less camp and humor.
Originally i really disliked 28 Days, it was not until i begrudgingly saw 28 Weeks and really liked it that I went back and rawatched Days and thoroughly enjoyed it.