It's probably one of the better things on TV at the moment that's produced in the UK, and I think it's up there with the best UK TV of recent years.
The idea of the show is homage to zombies. Sure, there's a bit of satire, that's not really intentional, but Brooker wanted to make TV nasty again. He loves zombies, and zombie movies, and this is his homage to that.
I liked it. It's a bit more brutal than you would see any other TV series go, and I like that. Plus all out zombie-fest to Mika = one of the funniest things I've seen.