Not much on tv these days.
I love sci-fi but the pickins' are slim. I watch Caprica on SyFy channel, that show Men of a Certain Age, because I am one lol, and the show LOST when it's on, but it's in between seasons now for LOST. I download Spartacus and burn dvds of it to watch every other week (don't have the Stars channel, gotta love torrent downloads!), not recommended for people with orthodox religious sensibilities, it takes place in ancient Rome with all of ancient Roman debaucheries depicted graphically. That's about it for fiction.
Everything else, is discovery channel stuff like Survivor man, Fox News. That's about it.
I liked Caprica until it started force feeding gay and group sex to its viewers. Battlestar Galactica also took a dive in morals in the more recent episodes I have watched [Felix turned gay and got a boyfriend, sheesh]. It seems a lot of Sci-Fi shows are being chocked full of gay/lesbian or group sex. I am already not a fan of seeing straight people engage in passionate acts while I watch TV, but the former is truly offensive. A lot of kids watch science fiction shows as well, this is a terrible education for them.
I like "It's Always Sunny in Philadelphia" quite a bit... every.single.act. these guys do is completely without morals, selfish, harmful, rude, cruel, destructive... the examples are so bad no one could ponder following them. Danny DeVito is hilarious.
"24" is good too. It seems like the current season is a lot like Iran.
I like "Lost".
I watch "The Office" sometimes.
"Smallville" too.
"Everybody Hates Chris" as well, Terry Crews is funny.
Mostly I just watch shows on Hulu.com and surf past the commercial parts.
My favorite shows of all time, perhaps, would be "Stargate SG-1" and "Farscape". I own every nearly every episode on DVD.