http://www.babble.com/CS/blogs/famecrawler/archive/2008/12/03/nbc-is-pissed-britney-cancels-performance-at-last-second.aspxJust when you thought Britney was getting her stuff together, she goes and pulls another crazy rabbit out of her hat. Her appearance on Good Morning America was huge, her new album dropped yesterday, and she was all set to perform on tonight's ChristmasenCommunityServer 2007.1 (Build: 20910.1126)