Anyone care to share any interesting geocaching stories?

I’ve recently just gotten into geocaching. If you’re not sure what it is, the web defines it (in simple terms) as: The recreational activity of hunting for and finding a hidden object by means of GPS coordinates posted on a website. There’s a website if you’re interested in joining: http://www.geocaching.com/

I’m wondering if anyone on fluther has found anything cool out of their geocache adventures! If yes, what did you find?