Here is the Tengu, a USB desktop companion offered by firebox.com. The USB-powered device basically sits by your computer making different faces according to its mood and lip-syncs to the music it hears so it looks like its singing along.
The Tengu has bright LED lights allowing it to show you over 14 different facial expressions. It can even lip sync as you speak. Also available are the Tengu All Stars (the Rotten, Stardust and Woodstock) that come with massive hairstyles and their own special stickers.
The black Tengu costs $32 while the Tengu All Stars are priced at $40.