We were in Moab a few years ago (I believe it was Moab IV) and there was a slideshow being given by a couple who were traveling the world by bike. It was an amazing show and they seemed pretty cool. They have a website that is over in Japan that hosts their pictures. You should check it out - the Bolivia and Argentina pages have some awesome pictures. I don't know about you, but it makes me want to get some dinero together and head out for a long ride.