These two videos are very much in the spirit of the junkbots project (and I wish I had created them) - two fantastic robotic builds.
Wobblebot (construction details can be found at: http://researchparent.com/homemade-wobblebot/)
Wrigglebot (details can be found at: http://researchparent.com/homemade-wigglebot/) which is a drawing bot.
The plan is to try out some of the ideas with in the junkbots project.
If you would like to know more about the Junkbots project contact firstname.lastname@example.org