We started Geocaching in January of 2007 and have enjoyed every minute of it.
It's also given us a fun reason to exercise. While some people may find hiking a mile through the woods to find an ammo can filled with Happy Meal toys strange, it satisfies the treasure hunter/pirate in me.
It's been said that “Geocaching is using a billion dollar satellite system to find tupperware in the woods” which pretty much sums it up.
Give it a try – you'll be amazed at what's hidden in your own neighborhood.