Back in '94 guys in my computer lab were amazed at some of the things you could find on the net, and we were especially taken by a French "art" site called "Femmes femmes femmes."
Back then, even the university had a slow connection so when trying to load images it would take a few minutes. Well this one guy was downloading a pic when the professor walked in...so he put it in the background of his desktop. A few minutes went by, and as he is literally sitting at his computer with his professor next to him the naked girl pops up front and center on his screen! The guy said something like "oh there must be something wrong with the internet today" and closed it out. The professor just looked at him and continued on. We never let him live that one down.
That is the first thing I can actually remember looking for on the web...that and a site called Arachnid's Web (search site?) or something...but don't remember what I was looking for.