My faves...In no real order:
1. The Twilight Zone (original)
2. Red Dwarf
3. Battlestar Galactica (remake)
4. The Outer Limits (original)
5. Lexx
6. Lost in Space (for the kitsch factor)
7. The X-Files
8. Star Trek (original)
9. Star Trek: Next Gen
10. Mystery Science Theater 3000
honorable mentions: Time Tunnel, Land of the Giants, Project Blue Book, My Favorite Martian, Primevel, Sliders, The Six Million Dollar Man, The Bionic Woman.....:D:D
UFO...I don't remember the show, but I did have some cool S.H.A.D.O space toys!