Eric Karjaluoto (from smashlab.com) started a topic called Pantone colors I use too often, where you can vote if you're already a member/logged in on Makefive. Which we're not. Anyway...
The List Universe has a list of the top ten shockingly bad tech ads, some can be found in our very own archive in crisp picture Quicktime format like the Slimtel advert. They missed a few good ones like the Atari E.T. Christmas ad which has the dubious honor of being the first one to earn us a cease and desist order (from Universal Studios no less) back in 99, the Alan Alda shows you how to hookup an Atari in 26 seconds, the Radio Shack TRS-80 Model 12 which makes you feel sorry for geeks in the 80s.
And many many more.