Claude Debussy is my favorite composer of all time, and arguably one of the most influential composers to modern music today. I listen to some of his works and just think... where did THAT note even come from? The progressions his compositions work their way through don't always or even frequently adhere to the intervals you'd expect, and there is such a heavy emphasis on evocation over technically impressive music, though he was an incredible pianist in his own right, capable of sight-reading as well as Lizst, the Paganini of the piano.
Clair de Lune is one of his best known compositions, but I've never seen anyone play it like this, and you HAVE to have the video to really appreciate what's going on in Angela Hewitt's mind while she interprets it. At about 2:35 there is a loud banging noise, probably some idiot who dropped something heavy, but I like to imagine someone's head in the audience exploded. Even though this makes me laugh every time I watch the video, by the end of it I'm completely done in.