I discovered this by accident, and it actually seems pretty fascinating. It's called the Uberman's sleep schedule.
http://www.kuro5hin.org/story/2002/4/15/103358/720What it is, is a sleep schedule that totals about three hours of sleep per day, and yet can theoretically give you a more rested feel than the normal 8-9 hours. The idea is to take a 20-30 minute nap every four hours instead of the normal sleep time, and it basically forces your brain to adjust to getting as much REM sleep as possible in these short times to compensate. This schedule - according to the article's writer - takes roughly ten days to fully adjust, and during that time the person practicing it will be little more than a zombie due to lack of REM, but after this time a number of changes occur - some beneficial, and a couple potentially strong drawbacks. I've also looked around at some of the comments where this schedule pops up, such as Cracked.com, and a number of people are saying this method is also very dangerous since it deprives the body of the other sleep stages.
Just thought I'd share it and see if anyone else has heard about it. Any thoughts?