B. Storm's beautiful American Sign Language interpretation of Gnarls Barkley's "Crazy." This was one of the best videos on the Internet, and has been censored by WMG - it's gone from YouTube and it was very hard to find anywhere else. It is a FAIR USE of the song, and its censorship is a tragedy.
Great art like this matters too much to passively let monopolists erase it from our common culture. When you find good videos online, consider making local back-up copies. We never know what's going to be censored when, and without audience back-ups some great art could be lost forever.