Mark's Adding Machine - oldie but still goodie program to replace your desktop adding machine
Login Barcode Creator - Create your own login barcode
MD5.VBS - VBScript for generating MD5, SHA1, and other hashes
Trim and Fit - A Workout for your Brain
WinKeySim - old program for generating keyboard macros
WorkoutGenSD - program for generating workouts for iFit SD Card equipment
NFLPicker - was a java applet for handicapping NFL games, but is work in progress being converted to HTML5