I found this great parody of the drain of powerpoint: Gettysburg Address in Powerpoint. There's also Tufte's analysis of Boeing's report on Columbia Tile Damage. Powerpoint really takes the crown for robbing the corporate coffers of brain cells. I never thought I would say this, but I miss good ole's overhead transparencies that cost $2/piece to make. At least once they were made no one would even dare suggest using a synonym for the second word in bullet four on slide three.

Credit: IDblog (entry) for the link to Dan Brown's Understanding Powerpoint: Special Deliverables #5, which provided the GA link.

BTW: Tufte uses ArsDigita Community System. Good stuff, even if you don't like Greenspun.