I love Think Geek on April Fool's Day:
http://www.thinkgeek.com/interests/looflirpa/e8be/?pfm=AprilFools_homepage_Featured_5#tabs
(Sometimes, due to strong reaction, these things get made into real products...my son has the Tuantaun sleeping bag from 2 years ago, for instance. Although they never made the 2001 Monolith action figure from last year.)
http://www.thinkgeek.com/interests/looflirpa/e8be/?pfm=AprilFools_homepage_Featured_5#tabs
(Sometimes, due to strong reaction, these things get made into real products...my son has the Tuantaun sleeping bag from 2 years ago, for instance. Although they never made the 2001 Monolith action figure from last year.)