World of Goo
The game World of Goo was created by the San Francisco based game developement company 2D Boys.The object of the game is to use a variety goo balls to create structures to get the balls vaccumed into a container. In order to do this, many of the structures are either bridges or towers. This site looks at some of the physics involved in creating bridges and towers in the World of Goo and in the real world.
Below is a trailer of the World of Goo game.