I am Kevin Hays, Rubik's Cube World Champion in 5x5, 6x6, and 7x7. AMA!
6x6 World Record: http://www.youtube.com/watch?v=B5Zi054Fa5k
World Cube Association profile: http://www.worldcubeassociation.org/results/p.php?i=2009HAYS01
I'm 19 years old, live in Seattle, Washington, and other than "speedcubing," I'm also a NCAA DIII swimmer.
Edit: Here's a picture of my total collection, about 40 puzzles: http://imgur.com/ju0e8tn
Edit2: I know it's been 17 hours but keep asking! I'll still answer.