I am a big Sci-Fi fan.
I am currently a member of the Vegas Sci-Fi Association and SNAFFU. Also check out the Sci-Fi center in Vegas!
I am a Past-President of Enigma, the UCLA Science-Fiction, Fantasy and Gaming Club. They're open to thsoe who want to have some good Sci-Fi fun. Enigma really is pretty cool and a great way to have fun. I am also a former member of Cal Animage Epsilon.
I am also into Live Action Roll Playing games. As geeky as this may sound, it is actually very fun and I've played characters ranging from a god and a Diety of Law and Order to a Roman senator!
Whenever I have a spare minute or two, to read up on some good Sci-Fi lit such as Harry Turtledove, Edgar Allen Poe, H.P. Lovecraft,(for more Lovecraftian fun, check out Cthulhu Lives),Issac Asimovand a plethora of others.
Despite the vast amount of crud on TV now-a-days, there are some good shows that are still being made, such at Stargate SG-1. The Star Trek (well...not including the more annoying series...), Blake's 7 and Babylon 5 are a few of the many old standards which are worth taking a look at.
Doctor Who is another standard which I've enjoyed for decades. The Doctor Who Guide has enough 411 to make you stuff Ferrets into your pants, while the Nitro 9 webstie has enough fan goodies to melt you brain like Morbius. Of course, not listing of Doctor Who sites would be complete w/ out a Quotes PageRecently, I've been getting into manga and anime. There are some good ones like Patlabor, Gunsmith Cats, Gunnm, Cowboy Bebop, and Perfect Blue, among others. TheJazz Messengers is a good site on Cowboy Bebop.