I loved Ruben Fleischer‘s original Zombieland (especially Bill Murray‘s self-portraying cameo). But it opened ten years ago, man. What does Zombieland: Double Tap (Columbia, 10.18) feel like? Honestly? Like a harmless but toothless generic rehash. You can’t just remake the original with cosmetic changes — you have to introduce a new idea or two. Even if you’re making a sure commercial bet, you have to be bold. And that doesn’t mean throwing in an unexpected twist, which any jerkwad can do.