I can't vouch for its fidelity to Homer, but this version of the Iliad, scripted by David Benioff (25th Hour) and directed by Wolfgang Petersen, is clearly more than a prequel to O Brother, Where Art Thou? It has plenty of visual sweep, fine action sequences, and, thanks especially to Brad Pitt (as Achilles) and Peter O'Toole (as King Priam), a deeper sense of character than one might expect from a sword-and-sandal epic (even if Pitt's character has some of the beefcake accoutrements of Leonardo DiCaprio's in Titanic). Far from lost among the zillions of extras are Eric Bana (Hector), Brian Cox (Agamemnon), Diane Kruger (Helen), Orlando Bloom (Paris), Sean Bean (Odysseus), Rose Byrne, and Julie Christie. R, 165 min. Burnham Plaza, Century 12 and CineArts 6, Chatham 14, Crown Village 18, Davis, Ford City, Gardens 1-6, Golf Glen, Lake, Lawndale, Lincoln Village, Norridge, River East 21, Village North, Webster Place.