Most of the action in The Polar Express consists of roller-coaster rides every five minutes (look for a Polar Express ride at a theme park soon). The animation's extremely detailed and smooth enough, but the film also has the creepiest elves and spookiest Santa ever. Look out for some very trippy moments, including a ride down a gargantuan gravity well, a curious black-white pairing (the engine room scene is classic Riggs and Murtaugh) and other movie parallels.