Yesterday I put in a plug for the Open Font Library.  Today I discovered another free-as-in-speech font site that's worth checking out: The League of Movable Type.  As of this post, their archive is pretty small (only 7 fonts), but each one of them is very well done.  In particular, those of you out there who are working on sci-fi games may want to take a look at Orbitron, which is the sort of font that goes on the side of a space ship  The fonts on this site are OFL licened, which means that they're usable in both open source and proprietary projects.

Anyway, I encourage you to check them out -- and keep an eye on them, because it looks like they update frequently!

Peace,

Bart