Wow, great topic.
typing basic programs into a Vic 20
playing radar mouse on my Vic 20, probably not the right game name but i can still see the sreen and hear the music in my head (i remember this better then losing my virginity)
the amazement and pride i felt when i finished programming a tank battle game for the C64 entirely by myself - only to have no one believe that i could have ever created something that complex and awesome
my grade 8 talent show. i planned to demonstrate some basic programming loops and logic by programming it in front of everyone. Then show off a database program i made and make changes to it in front off everyone. However, i was never allowed to do it because my teacher had an attitude that computers where only play and not a talent. I'm now a professional computer programmer. From that class i bet none of the kids that sang, danced, told jokes, threw a football, etc... ever made any money from their "talent"
the first time i watch my A500 run more then one program at the same time
the first time i connected to a BBS via modem
the first time i saw a web browser show an image instead of the alt text
the last time a shut off my A1200
