Ah, the joys of programming up simple games on this calc after finding out that you could run assy on it. The coolest one I ever saw (with I'd programmed it!) was a star wars tie fighter game that was SO COOL. Much time wasted in AP calc, I assure you.  But one of the best uses on this calc was being able to store equations and notes in ascii files for use during tests. Took the teachers awhile to catch on to that!!!