I bought this keyboard (to go with my new pc system) mainly as I wanted a keyboard with a back light, for all those late nights I spend working (actually just "stuff" rather then work, but who cares :D). And so far it has been a brilliant keyboard, the back light can be turned on to 3 settings, bright, dim and off, this makes it useful as during the day you really don't need the light on. There is a volume control, but, unfortunately no media center controls.
The feel of the keyboard is very nice and looks a beast. (Admittedly I was slightly disappointed that the palm rest at the bottom of the keyboard DOES NOT have a cyborg head on it).
The keyboard has legs at the back so it can be raised like any other keyboard, and the palm rest can be extended outwards and even removed.
Overall a very nice keyboard and a decent addition to any PC.
Five stars from me!
*EDIT*
I have had this keyboard for just a bit longer now, It still has its 5 star reputation easy, but I would just like to comment on two things, one is slightly annoying, and the other slightly more annoying, the first is that the volume buttons are not lit up, that may not, only a small thing, but its worth knowing, the second is the space bar, may it be just my keyboard or all, I don't know, but it is rather squeaky, barely audible if you press it slowly, but when you need to press it pretty quickly while playing games of typing, it is pretty irritating.
Brett Walter