It turns out that Russky bird is a cold war leftover equipped with live nuclear warheads, and Space Cowboys revs up to a rousing climax in which our heroes prove their mettle. But first the comedy: watching these codgers struggle to pass NASA's physical tests is a total hoot, with running gags about wrinkles, dentures, and oysters for sagging libidos. (Sutherland is the scene-stealer, but they're all having a blast.) Once in space, the movie gets down to business, and the visual-effects wizards at Industrial Light and Magic provide stunning vistas from Earth's orbit; a shot looking down at the boot of Italy is particularly beautiful. A subplot involving a weasely NASA administrator (James Cromwell) is rather perfunctory, but it hardly matters. Space Cowboys earns its wings, once again demonstrating Eastwood's comfort with any genre he chooses. --Jeff Shannon