George Harrison, with the Beatles, opened for Roy Orbison in the 1960s. He brought Bob Dylan back to the stage in the 1970s. And he utilized the masterful production of Jeff Lynne in the 1980s. Where does Tom Petty fit in? Apparently, Harrison and Petty formed a friendship and were known to jam together privately. Put all five of those names together and you have the greatest supergroup of all-time. One would be hard-pressed to improve on the lineup of the Traveling Wilburys.