In Bill Buxton's collection with brochure [PDF].UnMouse (Microtouch)
The UnMouse does everything a mouse can—only faster, easier, and in less space. To move the cursor, simply slide your finger over the glass surface. To make a selection merely press down. The UnMouse also serves as an extended keyboard. Tap the large red button and you have a Power Keypad with 16 keys instantly available to execute macros (60 in advanced mode). With its one million touch points the UnMouse also performs as a small graphics tablet.
$189
…and here's an album from someone else who's had one:
Looks pretty sweet imho.