Radix37, we salute you!
A genuinely talented guy, going by the name of Radix37, over at the PlanetQuake Speed Demo Archive has managed to achieve 100% completion of Metroid Prime in just 1hr 37m. Yep, you read that right.
It's a truly magnificent feat, and the icing on the cake is that Radix has uploaded movies (15 to be precise) of his entire run for you to marvel at. If you want to check them out, head on over to http://planetquake.com/sda/mp/.