The Royal Danish Theatre
I just read a list called Things That Should be Banned From Ads: The Definitive List, and while I agree with most points (especially the eyelashes one. Christ, that annoys me), I disagree with banning opera singers. Solely, granted, on the basis of this fantastic ad for The Royal Danish Theatre.
It's in Danish, but it's not really necessary that you understand. However, if you're curious here's a brief summary. He says he had a weird dream, everything was burning and while it was violent, it was beautiful. Then the wonderfully slightly crazy looking woman asks if it's still burning. The end. Beautifully weird.