First off: a new Flight of the Conchords video for the song Ladies of the World The guys sing in 70's roller-skating regalia. Don't miss it. (via Chris Roberson) The second one is somebody with a lot of free time. They filled wine bottles to play the Super Mario theme music when struck, then drove past the bottles with a RC car. Really well done. I can't remember where I saw this, I think it was somebody on Twitter.
Mario Theme Played with RC Car and Bottles