1st Place: Alienware Area-51 m15x
Alienware and gaming notebooks in general can polarise opinion, since not everyone is so keen on spending crazy money on expensive gaming notebooks. But, if you can see the value in saving space without sacrificing performance, then you can do little better than the Area-51 m15x.
For starters it's the only 15.4in notebook you can get that can house high performance graphics like the nVidia 8800M GT - since replaced by the 9800M GT. So, though it still weighs 3.6kg, it's not anything like as large and hefty as the great number of 17in affairs out there, but just as powerful.
On top of this, Alienware furnished the machine with an awesome customisable lighting system, including a backlit keyboard, touchpad and accenting around the screen. This, combined the extreme performance and 1,920 x 1,200 screen, makes this the most complete desktop replacement around.