Have you ever heard of "the walking machine"? The Bicycle Museum has posted a timeline with a quick history of bicycles. They also provide a page full of links to interesting bike-related sites. So...how many different types of bikes can you name? Before you watch the video, that is. :-)

We found above video on wimp.com, a site that collects what it considers the "best videos on the web suitable for all ages." Check them out and, if you're on facebook, go ahead and "like" them there as well.