I grabbed it off a torrent site, and I've been glued to it ever since. It's similar to the new TV show, but the characters and events have been slightly different so far, which is exciting. Although I hope some of the characters they introduce here will make an appearance in the show.
It's a new take on the zombie apocalypse, while Romero started us off with the sheer campy horror of it, we've seen super stylistic realism ( 28 days later ), campy fun ( Zombieland ), and a mix of the two. The Walking Dead focuses less on the zombie aspect, and talks more about the survivors. How would we react if our world was turned to shit suddenly, and we had to band together with what could be the only other humans out there?
A side effect has been me staking out my neighborhood to figure out where I'd hole up when the zombies rise. I've got my plan, I hope you start thinking about yours.