Highschool of the Dead
Interesting concept, considering that the show is a checklist of very possible zombie movie stereotype known to man. But this one throws in an even bigger one: basically all the big-boobed girls who know martial arts(and the most ditzy) are the most prone to survive a zombie outbreak.
And it you've broken up with your childhood sweatheart chances are, you will get caught in a situation where you awkwardly reunite with your old girlfriend and you have to kill your best friend who was dating your girlfriend and that's just the first 15 minutes.
The short 12 episode series, leaves you wanting a bit more, but never boring, it knows when to be serious and it knows when you should relax and chuckle a bit. But a word of caution, watch episodes 7,8 and 9 alone because it is really that raunchy.