I'm a little wierd in that I actually like reading about quantum and astro physics. I have been reading up on High Frequency Gravaton Waves and it is immensely fascinating. I found a very basic description that finally made my other readings "click" and thught i'd share it. While in the early experimental phases, the possibilities seem endless.
http://www.gravwave.com/docs/Layman%...0of%20HFGW.pdf
I'm a nerd. I know. But then so are most of you too...
Edit: This link explains a little more about how gravaton waves could be used in propulsion:
http://arxiv.org/pdf/physics/0410022