Voir Sadisflix. Taped for a two-part PBS Soundstage, Petty employs the Chicago locale as an entry into the blues and R&B that are at the foundation of rock & roll, and to a lesser extent, his music. Spread out over two DVDs, this results in a fascinating and exciting show, where the extensive covers are just as interesting as -- and arguably more interesting than -- the few hits he gets around to playing.