Comment by BrenBarn

I used to go into Staples or Circuit City and go to the demo computers. I'd hit the reset button, boot into DOS, open up QBasic, and write a classic program along the lines of 10 PRINT "BRENBARN RULEZ!" 20 GOTO 10. Add a little spacing offset so it would create a wave-like pattern of text. Set it running and skedaddle.