Pages tagged trackpad:

Multi touch for any,all synaptics touchpad | ubuntu snippets
http://ubuntu-snippets.blogspot.com/2009/03/multi-touch-for-anyall-synaptics.html
lericson/programming/ - Multitouch on Unibody MacBooks
http://lericson.blogg.se/code/2009/november/multitouch-on-unibody-macbooks.html

Via Twitter @samin
Multitouch on Unibody MacBooks
Presumably Leopard only
A little known fact about the unibody touchpad is that it can distinguish between up to eleven touch points - i.e., fingers. Another little known fact is that the sensor knows about the contact surface area (in terms of ellipsoids). Another yet less known fact is that Johan Nordberg didn't sleep much last night, and wrote a neat OS X application which simply plots what the trackpad (or Magic Mouse!) is saying about touches.
Inklet Trackpad Tablet
http://tenonedesign.com/inklet.php
Inklet allows your trackpad to emulate a pen tablet. When you're using a Pogo Sketch, the trackpad even becomes pressure sensitive.
Trackpad tablet for MacBook
Draw on your MacBook Pro trackpad