Katamari Series

Katamari Forever!
Official Namco Bandai site for the fifth game in the series. [Requires Flash]
http://www.katamariforever.com/

Wikipedia: Katamari Damacy
Encyclopedia article describing the game's story, gameplay, development, reception, and sequels.
http://en.wikipedia.org/wiki/Katamari_damacy

Katamari Absurdity
"Brendan Main dives deep into the absurdist humor of Namco's gleeful ball-rolling title and finds the game's biggest joke may be on the players themselves." [The Escapist] (September 22, 2009)
http://www.escapistmagazine.com/articles/view/issues/issue_220/6554-Katamari-Absurdity

Offbeat Bride: Katamari Damacy Wedding
Photographs of a theme wedding by fans. (July 29, 2009)
http://offbeatbride.com/2009/07/katamari-damacy-wedding

1Up: Interview with Developer Keita Takahashi
The developer talks about fan support convincing him to make a sequel and new features in We Love Katamari. (July 22, 2005)
http://www.1up.com/do/feature?cId=3142234&did=1

Katamari Damashii: The Snowball Effect
"GameSpy speaks with Namco about Katamari Damashii, a new game about a little prince with the sticky ball." (August 8, 2004)
http://ps2.gamespy.com/playstation-2/katamari-damashii/504503p1.html