Carnosaur 2 just because of the terrible ending of the first.
World War Z or The Zombie Survival Guide [Both, along with Recored Attacks, are being made into movies. WWZ comes out 2012, ZSG comes out 2014 and ZSG:RA comes out 2016]
Obvious answer, Dawn of the Dead

I was expecting Day of the Dead, it got better reviews on IMBD and any website I come across that mentions it, and even by critics. I like day better for the same reason I prefer the Dawn remake - better actors and better ending [better ending doesn't apply to Dawn remake].