Some folks are putting together a three part series meant to detail the entire story of the original KOTOR series. Part two is out now and they are lengthly forays into your spare time but significantly less than playing the 40+ hours it would require for each game. The movies are essentially the game itself, cut together to include the most important (read: narrative) parts while including the best action. A DVD version of parts one and two are available as well as an AVI for download.
Part One
Part Two