"Sigourney Weaver, in this fourth in the "Alien" series, returns as Ripley, the tough heroine who has been dallying with the toothed aliens since 1979. Weaver has weathered the experience much better than the films have. She's lithe and sexy in that no-nonsense action-hero way. About that much-discussed backward basketball shot she makes -- Weaver looks like the type who could pull it off."