(via) Scream by deprogramming.us ( a cool bunch of folks, check their philosophy on runeme-org):
Scream sits quietly in your computer's system tray and automatically springs into action when it detects a scream.Scream disturbs your Windows interface. But it isn't aimed just at computer frustrations. In a world where "anger" is paired with "management," Scream encourages the return to prominence of the lost art of screaming. As Howard Beale said in 1976, "I don't have to tell you things are bad.... all I know is that first you've got to get mad." But whereas Howard advised his viewers to turn their television sets off to get mad, Scream proposes that you leave your computer on.
Scream can be used in private. Or public. It can be used at home, at work, or on the street; at a Fluxus-style Scream-in; at the mall or at your favorite cafe. When your throat gets tired, Scream can double as an unusual music visualizer - or as a new approach to desktop filmmaking. Use Scream to start a meme. Or simply as a random act of deprogramming.
Scream - The Screaming Enhancer. (Also indicated for use with door slams, domestic disputes, and police helicopters.)
Besides, there is a social scream tool bound to share you screm à la del.icio.us!
Scream Themes utilize the web page bookmarking system in del.icio.us to create bundled themes you can scream at on your own or share with friends. Especially useful for launching at Scream-Ins. Join the anti-social bookmarking revolution!