Lifehacker has a great tip on launching your most-used programs really quickly
. It relies on the little-known (well, I didn't know it, at least) fact that when the Windows Start menu is open, pressing a letter on your keyboard will launch the first "pinned" shortcut that begins with that letter. Armed with this knowledge, you can prefix the names of shortcuts pinned to your XP Start menu with unique letters to make launching any of your 26 favorite programs as quick as pressing the Windows key and a letter. Very awesome.