I'd go crazy without all my multi-touch trackpad gestures for a long while if I had to switch my main machine back to a PC. 2 finger vertical and horizontal scrolling, 3 finger swipes to go forward and backward in the browser, 4 finger swipe up to make all the windows glide off the screen to view the desktop, 4 finger swipe down to make all the windows shrink and display all open windows on the screen to switch windows.
My sausage fingers look like palm gestures to the touch pad. I turn all that crap off.
