Seriously, dude? Yes, seriosuly, dude. Last December, baritone Dmitri Hvorostovsky jumped out of an airplane to the dulcet tones of Steven Tyler. He posted his jump to his Facebook account (login, but not parachute, required to view).
Bryn Terfel? Roberto Alagna? Matthew Polenzani? The gauntlet has been thrown down, gentlemen. Do you want Karita Mattilla or Renee Fleming to beat you to it?