Planet 51

Game Republic

This is a film split in two. For adults, Planet 51 offers a steady stream of sci-fi in-jokes. Watch for signs reading “Avoid the Unknown,” a homage to Invasion of the Body Snatchers . There’s a brilliant sequence where Chuck is chased by a mob with torches and pitchforks—but the torches are plasma lances. The film winks at E.T. , 2001: A Space Odyssey , and Alien constantly. Planet 51