Science Fiction has proven to be much more than just a by-product of '50s Communist paranoia or the space race of the '60s. Now, devoted Trekkers, Whovians and G-fnas finally get their due with this handy video guide to their own peculiar parallel universes. From monsters and mad scientists to space exploration and time travel, 1,200 films that span the sci-fi genre are featured here. 520 pp. 125 photos. Szie C.