Originally Posted By: tanstaafl.
it will build up your arm muscles as you repeatedly throw your computer through the nearest window in frustration at the lack of productivity with the touchpad as compared to a mouse.

Perhaps YMMV.

Using a good trackpad, and good OS integration, I find productivity to be better then a mouse. About the only thing I miss is the free scrolling wheel on the Logitech mice. I do keep a mouse around for gaming, but thats it.

With gestures on a 5 inch pad, I have more flexibility for special actions compared to a multi-button mouse. Beyond the basics of left and right clicking and scrolling, I have 12 possible actions I can kick off (ignoring screen corners or other mouse location specific events). I use 6 of these frequently. A few of them would take two buttons on a mouse to replicate, as the direction of a gesture can indicate intent, such as back/forward in a browser.