Similar flicks?
Obviously Shaun of the dead but if you enjoyed this one you might like Cockneys Vs. Zombies and New kids turbo, the latter isn't horror really but has the same kind of humour but on max volume! :)
shareAlso check out
Stalled:
http://www.imdb.com/title/tt2140429/?ref_=rvi_tt
and of course Zombieland.