Today's rock star is:

Douglas Wilder, former Governor, Virginia
"Presidential hopeful Barack Obama has his throngs of groupies, but during an appearance Tuesday at a political fundraiser in Roanoke, Doug Wilder showed that he is the original "rock star" politician."
Roanoke Times (Virginia)

So there we have it, this whole comparing politicians to rock stars is all Doug Wilder's doing. Evidently.