Prince Charles Cinema, London WC2 (0171-0437 8181) tonight, 8.30pm
INSOMNIACS OF the world unite. Starting this evening at London's wonderfully seamy Prince Charles cinema is the Primal Screen 48-hour movie marathon bringing together surprise previews and cult favourites. I'm not suggesting that you stay for the whole thing - surely watching Ferris Bueller's Day Off at 7 on Sunday morning (or any other time of the day or night for that matter) is nobody's idea of a good time. But there are treats here that you might like to find time to dip into, should they correspond with your weekend schedule. Opening proceedings tonight is a preview of the gritty, acclaimed directorial debut by Vincent Gallo (above), Buffalo 66. Then the bill disappears into the wee small hours with a handful of splendid science-fiction, including Bruce Dern in the pensive Silent Running, not to mention John Carpenter's splendid stoned comedy Dark Star, which should put old Red Dwarf fans firmly in their place. That takes us up to Saturday morning, when a brief interval will allow time for breakfast. Details on the Saturday/Sunday bill tomorrow.