I found wildgen while looking for a hex mapping program. The linked page generates random maps similar to those found in old D&D products. On the sidebar, there is also a link to an add-on for GIMP that will let you make your own hex maps. It's very easy to use, and I thought I'd let everyone know about it.
There's also a pretty cool random person generator that uses tarot cards, along with Traveller hex maps, etc. It's really just a great site for gamers.