You know one show not mentioned that I like quite abit was "The 4400" about people abducted by aliens at various points in time and they were all returned on the same day. We then find out many of them have powers.
Also what about "Lost in Space"? It doesn't feel like a little-known gem but I wonder if younger people are familiar with it like older people are.
You also had that Jessica Alba show called "Dark Angel" or something like that. She was genetically engineered and now she works for a bike service in a world were a EMP pulse knocked out the power and now America is kind of in ruins because the economy was destroyed. I gave up on it, maybe to soon and I think I should go check it out again someday.
Also was "Crusade" mentioned, yet? The spin-of of "Babylon 5." It was a okay show with a really good lead because it starred Gary Cole. It also has Jin from "Lost" in it and techno mage who was a fun character. I also like the science guy who when I think off I first think of him watching , alien porn.
Also one show I loved was "Weird Science" which was based on the movie. Two nerds create a sexy girl on the computer and of course she rejects them but also becomes their friends and help make their lives, much better. Lee Terguson, remembered more from "OZ" was a even better Chet than Bill Paxton was in the movie. You should especially watch their "Twilight Zone" episode.
Also you have a show you might find on Youtube called "DO Over" about a grown man who gets shocked and finds himself back in his younger self, still in high school.
Jason