The walking dead is a show that is currently in it's second season. The show focuses around some zombie apocalypse survivors and they're struggle to stay alive in the fucked up world. It shows zombies getting fucked up in many ways, has an amazing storyline, and each episode is about an hour long. I've watched all of season one and all of season two, so far, is on my DVR.

Check out the wiki for more.

I'd definitely recommend watching this show. It's brilliant.