For the players that are unaware on how to get some, If not all of the platform Racing 2 hats.
Kong Hat: Play platform racing on Kongregate.com Ability: Increases EXP Gain by 25% Percent
EXP Hat: Won Randomly in Races Ability: Increase EXP by 100%
Santa Hat: Won Randomly in Races Ability: Temporarily freezes the block below you
Propeller Hat: Won through the level "Hat Factory" by Jiggmin or "Volcanic Inferno" By Pounce Ability: You can Hover for a short period of time
Party Hat: Won Randomly through Races Ability: Immunity to lightning
Top Hat: Won through the map "The Golden Compass" by -ShadowFax- Ability: You can shoot up vanish blocks and walk right through them
Jumpstart Hat: Won during Happy hour Ability: A 3 Second headstart and Increased chances of speedburst in the ? Box
Crown Hat: Won through 5000 points on F@H Ability: Invincible
Cowboy Hat: Won through 100,000 Points on F@H Ability: You can fly
Moon Hat: Won by submitting a level to Jiggmins luna Campaign, but there will more then likely be another way to get it in the near future Ability: Will earn you Lux in jiggmins new game "Luna"
For Information F@H (Folding@home) please visit the Folding section of the forums. To download Folding at home please visit Folding.Stanford.edu
Good luck and may your Hat Rack be filled one day.