If you can't seem to get enough of the Phillips Ambilight, an LCD TV with a halo around the sides of the screen with colors that change according to its program material, now you can strap on some LEDs yourself, creating similar effects behind your Windows PC monitor with Ambient Reality Effects from SmartBytes. The lights work with any Windows application, but aren't Mac-compatible, nor do they work with a conventional television set unless you're feeding that TV video from your PC.
Anyway, check out that wild-looking user interface, which analyzes the screen and projects the main color onto the wall behind it. The starter kit is 165 ($211) for the single LED strip with software, and 55 ($70) for each additional LED bar, four of which you'll need for "quad mode," completely surrounding your monitor with blinkinlights. Looks like it would be more distracting and cheesy than entertaining.
Product Page [Smartbytes]