HP's Touchsmart tx2 is number one in my book because its the first consumer-oriented notebook to feature a multi-touch technology built into the display.
The 12.1-inch screen uses a capacitive touchpanel that can track two points simultaneously, operates with fingers or a stylus, and comes with the Mediasmart 2.0 interface customized for the notebook.
While Dell's LatitudeXT came out last year with the multi-touch power to simultaneously track all five fingers, the feature was kept dormant until the middle of 2008 and lacks any mainstream software to take advantage of the awesome feature.
In addition to the 1200x800 multitouch capability, the 4.5-pound tx2 has 2.1GHz AMD Turion X2 processor, ATI Radeon HD 3200 Graphics, 8 GB RAM, 500 GB HDD (5400 RPM), Bluetooth, integrated webcam, 8x DVD burner, VGA out and a digital pen.
The HP Touchsmart tx2 is available for pre-order, starting at $1150. It will begin shipping at the end of November.