The Rick Roll. The viral joke of 2008 so far. I've been caught a few times, with links disguised as other things, such as "cool photos of my trip!" or "check out the sales figures for Q1!" or "here's a great recipe for muffins!"
[One of those is a lie by the way.]
So, I won't try and deceive you. Here is a link to a Rick Roll. I'm not disguising it. Just don't click it, you will regret it. But you will learn the words to Never Gonna Give You Up ...
UPDATE JANUARY 17, 2009: A lot of people are coming to this blog because of the Rick Roll. I am keeping the link up above in case the creator brings it back. In the meantime, you may enjoy the Benny Hill version here too:
UPDATE NOVEMBER 26, 2009: Thanks to Joe Scatamato for alerting me to this Rick Roll you can't exit easily:
Also, this demonstrates how I can get website traffic from popular items of the day. I can do it for you too on a freelance basis, click here for more info.