Interesting solution from XCM that allows users to use their PS3 controller on Xbox360.
Description
The XCM Cross Fire adapter lets you connect your PS3™ controller to your Xbox 360™ console. With built in rapid fire / turbo,and tilt functions, this adapter is the ultimate in Xbox 360™ accessories. This adapter is also compatible with the Xbox 360™ and Original Xbox™ wired controllers for added Rapid Fire / Turbo functionality.
Function and features:
– Use your Playstation 3™ controller on your Xbox 360™ console.
– Enables Rapid Fire / Turbo on Wired Xbox 360™ and Original Xbox™ controllers when connected to your Xbox 360™ console.
– Supports 2 stick analog tilt functionality of the PS3™ controller on the Xbox 360™.
– User controller Rapid Fire / Turbo firing rates (High Speed, Medium Speed, Off)
* Must be used in conjunction with a Wired Xbox 360™ controller.
Source: Slashgear