I just recently saw I am Legend for the first time - not technically zombies, but same idea. I hate horror movies (didn't know this was about zombie/vampires) but thought it was a really well done picture. Two thumbs up!
That is a tragic scene for any dog owner/lover to watch, but it is still a pretty good movie.
I also agree with the person who mentioned 24 days later, that is a whole new kind of scary zombie. They don't overwhelm with numbers, slowly moving toward you, they run at you, bat sh*t insane, and rip you apart. Also, it only takes some of their blood getting on you to make you a zombie, so that sucks.