Used in high end servers, Legacy Apple Computers, Xbox 360, Nintendo Game Cube, Playstation 3 (Part of the Cell Microprocessor) and various Embedded devices.
Manufactured primarily by IBM and Motorola.
Steve: Then why doesn't Microsoft use it?
James: They use it in Xbox 360!
Steve: Okay, then why did apple STOP using it?
Steve: It's okay man, denial is the first stage.