Love Think Geeks products. They have created some cool videos to go with some of their stuff. Check a few out below:
Zombie Combat Manual from ThinkGeek (http://www.youtube.com/watch?v=L0_HaLXYFj4#ws)
Darth Vader Robotic Arm from ThinkGeek (http://www.youtube.com/watch?v=2N_6CaVQyfo#ws)
Kinetic Sculpture from Ironman 2 - Now available at ThinkGeek (http://www.youtube.com/watch?v=lWKVWnHRzOU#ws)