RJ auctioned some exclusive tracks on ebay to benefit Doctors without Borders:

“I decided to do a one-time-only auction of some tracks I’ve been sitting on with all proceeds going to Doctors Without Borders. This donation, while instigated by the situation in Japan, will be “untethered”, in that DWB does not earmark donations for specific regional causes; in short, they put resources towards where needs are highest. ”

The winning bidder will receive exclusive rights to the track, including the original ProTools session files.   You can check the auctions here (sorry, we snoozed, they ended this weekend) but also listen to snippets here.