Oh my sweet Lord. Please forgive me for inflicting this on you, but I have to share it with someone: Andrea Bocelli and Anna Netrebko at the Classical Brits.
Bocelli - essentially a glorified pub singer with fantastic marketing - sounds as if someone is tightening his throat with string and he's gasping for breath, while Netrebko seems to be trying to show that she, too, can do shrieking rather than singing - and that she is as capable as anyone else at ignoring the conductor's tempo.
Car crash singing (via Opera Chic).