The 4400 One of my all time favorites about 4400 amneisiatic alien abductees returning to earth & discovering that they have all been genetically altered to manifest unique powers, & how they reintegrate back into society as a feared minority.
(Heroes consistantly rips off ideas & themes from this show)
Dark Skies Another uber great show set in the 60's ultimately about the truth behind Roswell.
Space: Above & Beyond The coolest show about life as a military fighter pilot before Batllestar Galactica
Primeval About a group of scientists who track the openings of intermitent wormholes into a primeval paralell dimention, & hunt the prehistoric creatures that come through.
The new took me a while to get into but it's got a great story. If you have ever studied metaphysics it will blow your mind.
Babylon 5 is good too. The 5th season is a stretch, but it's entertaining
I also like Doctor Who. It's campy old school sci-fi but it's fun. David Tennant, the newest doctor is awesome as well, one of the best yet.....rivals Tom Baker.
I guess I'll show my age just a lil bit and say Twilight Zone and Outer Limits. Then Star Trek the original series. Then Sliders and X files and recently Fringe, ya just gotta love a show with a mad scientist in it.
if you havent seen any of the episodes yet (the show was cancelled a long time ago), the basic gist of it is that this criminal guy gets his brain implanted with a little bug thing that allows him to turn invisible, and he's forced to work as a spy for the government. Good comedy and action, but no space-stuff.
Agree with those who say Doctor Who, it's brilliant. Especially with Tennant as the Doctor.
Try to watch it from where the new run of series starts, with Christopher Ecclestone who's also pretty good. He's in it for one series, and now Tennant has done three, not including a number of Christmas specials. I think one of the best episodes I've seen is "Blink", which is bloody scary and brilliantly written. It's in the third series if you want to pick it out.
There are some brilliant episodes and because it's hardly based in fact the writers can do as they please within the confines of the plot, so there's so much that can happen. The ideas haven't got old and there are some fantastic storylines.
Watch it!
A cynic is a man who, when he smells flowers, looks around for a coffin.
~H. L. Mencken