I'm a fan of an awful lot of sci-fi and fantasy, Star Trek and LotR included.
I have a Voyager-era commbadge tattoo, hehe.
Also have an AURYN tattoo (Neverending Story, where my Falkor got his name from) and if it counts, "don't dream it, be it" from the Rocky Horror Picture Show is on my left thigh. My skin is just full of pop culture references. >.<
My screenname here (also gamer-tag in everything it was available in that I hadn't already chosen Seven of Nine for) is also from a fantasy series. Anyone recognise it? ^.^
My tumblr name is from Dune as well (Muad'Dib, Kwisatz Haderach was taken, haha) and I plan to get the first bit of the Litany Against Fear as a tattoo when I can afford to.
Looks like we have a lot of geeks here.
P.S. Totally looking forward to the Hobbit film. Though I have to admit, I am a little apprehensive. In LotR, I really disliked the replacing of Legolas with Arwen in the scene where Frodo is rescued from the Black Riders, along with the rest of the overkill involving her... Hrmmmmm....