It wouldn't be an "I once did..." story since you didn't create the meme. The history of it is covered in detail here: http://en.wikipedia.org/wiki/Rickroll
The story is more like how I helped co-ordinate a large group of people (it will be several hundred thousand people by the time this is done given we're now at 150k) getting an 80's pop star the best act ever award (an award I might add that they probably weren't going to nominate him for given they announced it days before without his name), completely frustrating a major media organisation by getting Astley the vast majority of the votes in the process.... in my spare time.
That's a pretty cool story IMO.
I'm not saying, nor have I ever said it was my idea, I've just helped focus the chaos.
By the way, I actually know the vote totals so far (from someone at MTV who reached out to me) and can quite comfortably say that the tool on our site has contributed to a significant amount to that number (which I can't disclose), given I know how many we've also done.