How old were you when you got your first computer?
makecheck: I think I was 10, an Apple II+.  It wasn't the first thing I used to program (I'd dabbled in LOGO and BASIC before), but it was a surprisingly complete computer.  I used it to learn about a lot of different things, such as input from peripherals like a joystick, as well as memory management -- from that damnable "out of memory" error when my overzealous BASIC programs got too big. :)