Ozzy Osbourne is relishing every opportunity during his debut at Comic-Con.ET's Matt Cohen spoke with the rock star Friday in San Diego, where he offered an update on his health since he was released from the hospital last month following major surgery. For starters, the Black Sabbath frontman looks spry as ever, as he enjoyed the bustling scenery at Comic-Con. Ozzy and Todd McFarlane are there to reveal artwork for their limited edition special and the McFarlane-designed Ozzy comic book that'll accompany the purchase of the rock singer's new album, (out Sept.