Tricky Truck is a skill and physics based driving/parking game. You try and make it through to the end of these crazy levels in a semi-trailer truck with at least 50% of your cargo intact. There is a free version that allows you access to 1 truck, mountainous levels, user made levels, and a level editor.
I think it'd be a good game for a few laughs and to test the streamers skills. Even if it isn't streamed I suggest checking it out because it is a pretty fun little physics game.