This brisk, free-falling fantasy about the famous collators of German fairy tales, played here as a kind of comedy act by Matt Damon and Heath Ledger, is Terry Gilliam’s most entertaining work since the glory days of Time Bandits, Brazil, The Adventures of Baron Munchausen, and The Fisher King. Screenwriter Ehren Kruger (Reindeer Games, The Ring and its sequel) is completely indifferent to the true story of the real-life brothers; he doesn’t so much adapt their tales as use them to inspire Gilliam’s goofy and/or creepy-crawly period adventures. With Lena Headey, Monica Bellucci, Peter Stormare, and Jonathan Pryce, the latter two giving some of their broadest turns as comic grotesques. PG-13, 118 min. Century 12 and CineArts 6, Chatham 14, Crown Village 18, Davis, Ford City, Gardens 7-13, Lawndale, Lincoln Village, Norridge, North Riverside, River East 21, 62nd & Western, Webster Place.