Rock & Roll Tumbler - One of these can be found at Desoto Caverns in Childersburg, Alabama. It's powered by humans!
This boat launch is located at FreizetPark Bell in Germany. I'm pretty certain that's a jump at the end - and it looks pretty fun!
This ride, called "The Butterfly", is located at several parks in Europe, and also the FreizetPark Bell mentioned above. It looks almost like something you could put in your back yard - it looks cheap, but still a lot of fun for the kiddies.
