Barack Obama has released all of his earmark requests from 2005 and 2006 (his 2007 earmarks have already been released). You can see the earmarks here.
His campaign also took the opportunity to tweak his opponent for not doing the same:
"Bringing real change requires changing the way we do business in Washington," said Obama for America Communications Director Robert Gibbs. "If Senator Clinton will not agree to join Senator Obama in releasing her earmark requests, voters should ask why she doesn't believe they have the right to know she wants to spend their tax dollars."