Here’s a pretty cool trick from the January 1997 issue of PCComputing.Com:
The Windows Start Menu has a built-in stutter, a brief delay in the appearance of the Programs, Documents, Settings, and Find fly-out menus that’s supposed to make Windows easier for mouse newbies. If you tend to think of any intentional PC delay as a mortal sin, getting rid of the stutter couldn’t be simpler. Go into the Registry Editor and look at HKCU\Control Panel\desktop for a value called MenuShowDelay. If it isn’t there, you can add it. Just click on Edit and then New String Value, type MenuShowDelay, and hit Enter twice. Set the value to “0”. You have to restart Windows for the change to take effect.