Zombieland is downright delightful. Somewhat surprisingly, a movie about a post-apocalyptic cross-country road trip through an undead nation converted almost entirely into legions of the cannibalistic undead is really about the simple pleasures in life: stuff getting destroyed in balletic slow motion, cowboy heroes wielding John Woo-style double hand cannons, and of course, Twinkies. Pair these timeless themes with solid zombie-centric humor, and you've got comedy-horror gold.
