Hat Tip to pointless button pioneers: SadTrombone.com and InstantRimShot.com.
For details about the Wilhelm Scream go read this well researched article: The Wilhelm Scream at Hollywood Lost and Found.
And if you need more scream check out this Wilhelm Scream compilation on YouTube.
More Pointless Web Sites: Static Sky, and the retired: This Century Sucks, Meow Purr Meow, Tin Foil Caps, Sarah Louise Palin 2012 (yes it is a joke)