Since I switched to a macbook from a (proper) thinkpad I just carry a trackball with me when I expect to do longer stuff that requires mousing - the track pad isn't bad, but gets annoying over time. That also finalized my switch away from mice - before that I had both a mouse and a trackball on my desk, and while I still have that I can't remember when I last touched the mouse.

I actually looked for a desktop trackpad for my desktop pc that is on par with my macbook trackpad. Didn't find one available.