Woz did a stint as an educator after working at Apple, and one of the stories he recounted was how a student told him he was able to create an animation on a computer. Woz's first thought was that it was not possible, because there was no video software on the machine. But the student had rigged it so that a sequence of still frames, each in separate windows, arranged in a chronological sequence, would all close when a program would close, and the effect would be an animation as each of the windows was closed in turn. That, Woz said, was hacking.
I don't recall where I heard that story, and my recollection may be off, but that story always stuck with me.