Every Half-Life 2 player has heard about Garry's mod before. If you haven't--shame on you--it's a mod that lets players place models and objects from Half-Life 2 in a canvas. While most players use this mod to do 'interesting' stuff with Alyx, Google Video user "deans" has created two Rube Goldberg devices. The videos can be found in our download archives for your convenience.

Half-Life 2 Rube Goldberg device (6.45MB)

Half-Life 2 Rube Goldberg device Reloaded (8.81MB)