Howard Stern has nominated an interesting trio to complete the ice bucket challenge after him. Trouble is, one of them is dead, reports E! Online. In a bizarre video posted to YouTube yesterday, a bare-chested Stern plops an ice cube into a shot glass of water, then pours it over his head, immediately succumbing to mock shivers before hopping off camera. But first he challenges the very much alive Barbara Walters and Mark Consuelos, plus the quite dead Casey Kasem, to douse themselves with ice water next. Stern is aware of Kasem's death at age 82, E! notes, as he's discussed it on his radio show.