Yeah, Paco and Cowboy Neal are two of them. Since Cowboy Neal's home node has been around since 1999, it appears this gag has been here for a while. Watch the upper right corner of the Perlmonks pages. The next time you see the guy with a bird on his hat, do a mouseover.
Of course, unless you're one of the Illuminati you'll never fully understand, so just go along wth it.
Why it took off, I have no idea. I always preferred 'There are spiders in my hair! There are spiders in my hair!' response from The Asylum (at Georgia Tech, I think), unfortunately, that site closed shop in the 1990's, and most people these days never saw it. They had a poll archive, but I can't remember the exact URL to check if archive.org has a copy of it. (and searches for the above response or 'favorite features of Microsoft Bob' don't find anything)
The asylum had an interesting take on polls -- each response had [+] and [-] buttons next to it, and each poll could have 20 responses -- people would add responses 'til it filled up, and if a response was voted to -20, it was deleted, and someone could add a new response.
Not sure why it took off on Slashdot (meme?), but I think it became the "Other" or "None of the Above" type options, and then expanded into other sillier choices. And thus we get this poll. I can't believe he's winning over paco though. How depressing!