As a big Sci-fi geek, I *REALLY* wanted to have nerd-centric ringtones on my cellphone!
I found this GREAT site that lets you create your own ringtones, and made some Godzilla and Doctor Who tones. The site does require you to register to download the tones, but downloads are free, and it's SOOOO great to have the 2010 Doctor Who theme play when I get a call!
TONS of other stuff on the site, but here's a direct link to my tones, and feedback is welcome Hope you guys and gals enjoy them!