The Boston Globe has posted a list of their top 50 science fiction TV shows. The list's somewhat psychotic, though. The Avengers, Batman, and Tales from the Crypt are listed. Tales from the Crypt and Batman fer cryin' out loud? Yeesh.
They also left out the terrific UFO, a campy, terrific show from 1970.
I think they've hit a lot of things spot on, so it makes a fun read despite the stupid crap they've got in a few spots.