Hey, I've been seeing this around /b/ for the past while, and I've been wondering what people think of this, being how much and often it's used, or even its origin.
People use it a lot from what I've seen for its intended purpose, as showing what they themselves were like, but it also spans many different fictional characters, too.
Here's a few I've found, along with the template.
But this seems like a really widespread thing, it covers different races, sexes, classes, interests, and even ages.