The two Fedora contributors cover the back-story of the Raspberry Pi for anyone that's been sleeping under a rock, how to go about getting parts for the RPi, and the process to get Linux running on the ~$35 ARMv6 system. With Linux running on the Raspberry Pi, the possibilities are nearly endless for this low-cost development-friendly board.
Among the "hacks" covered are the many different possibilities for cases, building game consoles with the RPi, using the board for various game emulators, or even using the board for powering an ice cream maker or Geiger counter.
Those with an extra Raspberry Pi looking to engage in some interesting end-of-summer projects with the Raspberry Pi are encouraged to visit the "Raspberry Pi Hacks and Projects" talk tomorrow at LinuxCon. For those outside of Chicago, all of the presentation slides can be viewed in PDF form.