Watch 'Dexter' Michael C. Hall Rehearse for Tribute Concert 'Radiohead: Obsessed'Watch 'Dexter' Michael C. Hall Rehearse for Tribute Concert 'Radiohead: Obsessed'The actor and his Tony-winning co-star from 'Hedwig and the Angry Inch' led a musical tribute to the groundbreaking British band in New York over the weekend.Tim KaranTim Karan