I like some Sci Fi,
I'll start with the big 2, Star Wars and Star Trek. The 1977 Star Wars (so book 4) was amazing, but it went downhill from there, nuff said.
Star Trek, it's okay, the Original series is goofy, but fun. Enterprise was good, but at times silly. Voyager I liked but Enterprise was the best of the bunch.
Nothing tops the remake of Battlestar Galactica, it explored humanity, religion, war etc in ways never really seen before, especially in Sci Fi.
Star Gate, didn't really watch the first series, but I did like Atlantis and SGU at lot. Original film was good, I like alternative creation theories to the normal biblical stuff.
Oh yeah, clone wars,
Was liking the remakes of V, shame they stopped.
As far as films go, there have been some really great films, too many to mention really.
I'd like to throw in some games as well, as a few have film title tie ins. So all the Star Wars space games from the 90's (Tie Fighter, X-Wing etc) never really liked the run around on planets shooting storm troopers ones much.
Wing Commander (the intro to WC3 with Mark Hamil was cinematic genius for its time, a 20 minute intro to a game that was a movie, awesome)
Currently watching Fringe, Eureka, Grimm, Walking Dead and Alkatraz.