The Toshiba Protégé R400 tablet PC comes with Windows Vista Ultimate, a finger print reader and up to 4GB memory:
The really cool feature? Its wireless docking system uses Ultra Wideband (UWB). Just by being in range of the docking station, the laptop is automatically connected to an external display (in mirror or dual-display mode), mouse and keyboard.
My IBM and HP laptops have lasted longer than my Toshibas in the past but this one looks very tempting.