Teenage Cancer Trust is a charitable UK-based organization that "funds and develops specialist teenage cancer units within hospitals which enable young people to be treated together, by an expert team, in the best possible environment for their age group." All proceeds from the auctions will go directly to Teenage Cancer Trust. Mad Catz will also donate a bunch of other gaming peripherals and accessories to all of the charity's units in the United Kingdom.

"We are delighted that Mad Catz is lending their support to Teenage Cancer Trust," said Teenage Cancer Trust Chief Executive, Simon Davies. "Our units provide a sense of normality for young people being treated for cancer and so having the latest games and gaming equipment available is really important to them. We're also very grateful to Roger Daltrey for his tireless support of the charity."

The auctions for both Xbox 360-compatible guitars began on eBay today, and will run through the evening of February 10. The auction has been timed to coincide with Super Bowl XLIV, where The Who will perform live during halftime. Besides being a neat idea, the charitable partnership with Mad Catz may be an indicator that Daltry wasn't just referring to more Rock Band DLC in comments he made last October about a possible The Who: Rock Band game in 2010. After all, Mad Catz also manufactured the official licensed controllers for The Beatles: Rock Band.

Charitable shredders who'd like contribute to a noble cause and bid on the guitars can do so on eBay here and here.