So the folks at Bizzaro Games are working on Odyssey Prime, which they describe as a game "of Alternative Universes and Modern Covert Operations" - kind of a militaristic take on the whole Stargate thing. Even if that doesn't float your kontiki, D20 Modernists might want to check out the PDF preview of the Outrider and Wetwork classes they just posted. The PDF kinda had the do-funnies in my browser, but downloading it outright may get you better results. And it's 100% Open Game Content, for the health of your colon.