more fun from Start->Run

I'm a huge fan of running devmgmt.msc, notepad, and calc from the Start->Run prompt, but here's a list of how you can call most any control panel applet

My faves:

main.cpl to change mouse properties
ncpa.cpl to see network properties
control sysdm.cpl,@0,3 to bring up the page for changing environment variables
control main.cpl,@0,2 to bring up the mouse gain slider