I've always thought my usernames (on other forums) were creative. I was Color Me Happy (not a play on the user Color Me Evil from this site, it was something I thought of before I saw that user), Healthy Libido, and Kurt Cobain. I like my PC names, as well (Sydian, obviously, and SilverSmeargleSplatter).
I know this is obvious if you know me well, but I have always adored the username Klippy. Astinus, Virtual Headache, Abnegation, Screw the rules, I have green hair!, Careful With That Axe, Pichu!, L'Viaquez, Master Bait, and someone who was a triangle. Those are some usernames I've liked on PC. I hate most usernames with numbers, underscores, x's, and Japanese names. I'm really weird, lol. Don't take offense to that if you have those, though. It's just stuff I prefer not to have.