Cartoon Network Invaded was a interconnected bonding of the cartoons Foster's Home for Imaginary Friends, Ed Edd n Eddy, My Gym Partner is a Monkey, The Grim Adventures of Billy and Mandy and Camp Lazlo. They were bonded through the appearance of aliens in each of the five shows in a 5-part serial over the month of May in the year 2007.
All of the shows have their own wikis! These wikis are:
http://fhif.wikia.com/ -> Foster's Home for Imaginary Friends wiki
http://ed.wikia.com/ -> Ed, Edd n Eddy wiki
http://mygympartneramonkey.wikia.com -> My Gym Partner's a Monkey wiki
http://camplazlo.wikia.com/ -> Camp Lazlo wiki
http://grimadventures.wikia.com/ -> The Grim Adventures of Billy and Mandy wiki
The wiki that most urgently needs help is the Foster's wiki. This is followed by the Camp Lazlo wiki, and the Grim Adventures wiki.