I've never been a fan of touchpads. My tablet works similarly, but it offers utmost precision unlike the touchpads for laptops. The 1024 pressure levels are nice, too. And playing Unreal Tournament with it is an outright bad idea, as you can only really walk straight while touching the tablet with its pen when you hold the pen tip in the exact center of the tablet. One inch of movement will cause your character to revolve heavily.
"Stephen Wolfram is the creator of Mathematica and is widely regarded as the most important innovator in scientific and technical computing today." - Stephen Wolfram
Then you don't have it in mouse mode. A touchpad operates diferently from a tablet, though. You drag your finger across it to move the pointer, tap it to click, double tap it to double click, and tap then drag to drag.