Is it normal that you'd like to thank someone here...
Has someone helped you, made you laugh, enlightened you, entertained you, stuck up for you, made you feel better, happier or more normal? Has someone done something, no matter how small, that you appreciated?
If so, it's time to put on your "thanking cap" and let them know. It's not about popularity; it's about appreciation of the small acts of random kindness we all bestow upon each other here on a daily basis.
It doesn't have to be an obvious choice. In some ways, it'd be better if it wasn't. Let's show some appreciation for the regulars and non-regulars alike. :D