When trawling through the ridiculously long thread showing pictures of peoples Mac setups, I noticed an awful lot of ambient lighting and want to try a little myself. It's a painfully wanky thing to do, but with the iMac in the living room there just isn't any room for an ordinary lamp so a blue LED could look stunning. What do people use for ambient lighting? It seems to be that, with USB ports being in fairly good supply behind the iMac it would be criminal not to go with something USB powered. I found this: http://www.warehouse-aquatics.co.uk/index.php?p=product&products_id=2284&cid=0 Looks like it might do the trick, and even comes with a suction cup which *might* attach to the back of the iMac or the stand. The same light is also available in white, red, green or a colour changing version, but I'm convinced blue is best.