Love the show. My friends and I don't call it a zombie show, but a drama that happens to have zombies as a subplot. It's actually the only series that I follow. (And now have to wait until October until season 3... ugh!)
I was worried this seasons, as midway through it, AMC fired the show's creator/ep/showrunner Frank Darabont, but I thought it was a strong season. I really look forward to season 3.
One thing of interest, at least for me, a lot of season 1 was shot just down the road from where I live.