I found an old commercial for Windows 1.0 in which Steve Ballmer shows his freaking-out tendencies and comes off more than a little desperate (like a used car salesman that took $20 out of his own pocket to make a TV ad) to get people interested in Windows. I think it's pretty funny and contrasts well with the seemingly little effort they have to put into getting people to buy their products now

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Link.
I should note that there may be some explicit content on that site if you go looking for it...