Unchained Reaction
Unchained Reaction is really a science and engineering reality game show which airs on the Discovery Channel. It is judged and executive-produced by Adam Savage and Jamie Hyneman, best known for hosting the most science entertainment show MythBusters.
The show pits two teams of backgrounds against each reaction contraption. Teams are given five days to create a set of mechanics centered on a pre-determined motif and are provided with collections of materials and tools. Mid way through each week, these teams are provided with a surprise"missing link" thing they need to add to the centre of their own machines. The winner will be selected by Savage, Hyneman, and also a judge.