I was signing up to Runescape (don't worry, I stopped playing it many eons ago) just after watching Star Wars: Episode 2, and so chose jangofett, but it was taken, and the site suggested that I use jangofett287, so I did, and I've never been bothered to pick another one.
Actually, that's not true. I have in some places recently used various deformations of my real name to form my username/ screen name, but usually its jangofett287 for the logon.
Recently I've come up with a new username that I'm yet to use. DiZZiD. If I tell you it was inspired by a character called DiZ, can anyone guess the game he's from?