Today is the 25th anniversary of the Apple Macintosh when it went on sale on this date in 1984. Here is an old "Making Of" documentary by Apple from that year. Look for the Bill Gates cameo in part two of the video Part 1.
[youtube=http://www.youtube.com/watch?v=PheGcPe6JDo&eurl&fmt=18]
Part 2.
[youtube=http://www.youtube.com/watch?v=04Ik-qkdG_o&NR=1&fmt=18]