Sirius Satellite Radio is rallying some its top athlete hosts to contribute exclusive items to an online auction to help raise funds for tsunami relief. Contributing to the auction are all of the celebrity athletes that host shows on SIRIUS' action sports and lifestyle channel, Faction: Lance Armstrong, Tony Hawk, Bam Margera, Bode Miller, Jonny Moseley, Kelly Slater, Sinjin Smith and Kerri Walsh.

One-of-a-kind, autographed items and/or experiences with these world-class athletes will be made available in an online auction starting Monday, January 17 at 6 pm ET, through www.eBay.com/sirius.

Some of the items to be auctioned are expected to include:

* A US Postal Service racing jersey autographed by Lance Armstrong
* A Bam Margera-signed skateboard deck, guest appearance on his Radio Bam program on Sirius, and a visit to the set of the Viva La Bam TV show
* A 2-hour surfing lesson with Kelly Slater in Southern California, a signed Channel Island surfboard and a signed copy of Kelly's book, Pipe Dreams
* A Tony Hawk signed Birdhouse skateboard deck

Net proceeds of the online auction will be forwarded to the U.S. Fund for UNICEF.