The B List - Sci fi/Fantasy Slang
Noy Jitat - Pirates of Dark Water
This series had many curse words, but this is the one I remember and say the most. I believe it was Ioz's swear word of choice, but PiratesofDarkwater.net states that Ren was actually the first to use it.
Frack - Battlestar Galactica
Battlestar's F-word has been showing up all over lately. I just heard it on Veronica Mars the other night and it has entered into my vocabulary pretty easily. Interestingly enough, Wikipedia links the first use of "Frak" to my favorite Star Trek character, Scotty in Final Frontier.
Frill - Farscape
I have been catching up on the amazing space drama Farscape on DVD lately and I have to say that Frill is a forerunner of Frack, just as many of the ideas in Battlestar tie directly back to the crew of Moya.
Thank the Maker - Star Wars
Star Wars has a ton of slang, from Nerf Herder to (the horrible) wizard, but my favorite of all time has to be C3-P0's "Thank the Maker." Out of all the slang from movies and tv, I probably say this one the most.