Dust Off Zone
I have never heard of Dust Off Zone prior to attending QuakeCon 2008, but their products on hand looked very interesting.
The Dust Off Plus is a can of air with what they call a 360 Vector Valve.
As you can see just from the picture, this could come in very handy when cleaning your computer case and parts.
FPS Group was on hand giving away power supplies and showing off some new products.
The BoosterX 5 is a 3.5 inch (CD/DVD ROM size) power supply that is able to supplement power to accessory devices and will leave your main power supply enough juice to power the mainboard and processor.
The FPS booth also had a couple of Dell machines for gamers to play with.