Hrm, first "experience" would have been at some point in my job of on-site computer support. Couldn't tell you exactly when or where.

First I owned would be my pair of Digital Audio machines I got for $100, and it turned out one had a dual 1 GHz upgrade! I later fried the dual CPU card. But, I did get a 1.5 GHz single G4 card for it later, along with a GeForce 4 Ti 4600, so it's happily chugging along now.

(Yes, Quadraman, I'm stalking you, replying to all of your new posts... MUAHAHAHA!!!)