His newest video on the interwebs is the Lobby Scene from The Matrix, only he cuts out the audio and replaces it with an a cappella multi-track of his own voice, including guns that make "pew pew" noises. The only way to understand is to watch. There's some other very funny videos on Matt Mulholland's YouTube page and website, but not all of them are workplace appropriate, so consider yourself forewarned. And p.s., isn't it crazy how dated those Matrix costumes look now?