The Raspberry Pi is a credit-card sized computer that plugs into your TV and a keyboard. It’s a capable little PC which can be used for many of the things your desktop PC does, like spreadsheets, word-processing and games. It also plays high-definition video. The Model A will cost $25 and the Model B $35. The idea is to make a tiny and cheap computer for kids. At this price, the potential of this little device is amazing. Click here for a article that does a great job at explaining the project.