One might not have discovered it yet, but there is a pretty cool visualizer - an engine for generating interesting patterns based on the pitch and rhythm of the currently playing track - built into iTunes. To see the visualizer do its thing, play a track and go to Visualizer ? Turn Visualizer On. iTunes translates the music into some pretty psychedelic graphics. Go back to the Visualizer menu and select Full Screen, and the effect will fill the screen. The visualizer looks great from across the room on the computer or, even better, connected to the television. If one is having a party, one can even try connecting the laptop to a digital projector and projecting the visuals on a wall.