Zathura
(2005)
Despite some flaws, I really enjoyed this movie even though I was sure that I wasn't going to. I guess its atmosphere of warmth and magic won me over.
Zombieland
(2009)
Zombieland has taken a genre that appeared to only have one trick of its sleeve and has shown it how to pull a rabbit out of its hat and then make it explode, showing the audience with blood, fluff, and bunny parts. What a great film.