The US has invested a healthy amount of money into combating the terrorist threat -- certainly a bit more than $100. According to a CNN report, one of a few experimental methods being used to identify suspicious dudes at the airport uses Nintendo's Wii Balance Board (sans Wii Fit Plus).
Scientists part of the Future Attribute Screening Technology (FAST) program have taken the Wii Fit peripheral and adjusted it to measure how a person shifts their weight. Scientists hope to find "a level of fidgeting that would suggest the need for secondary screening." We're just glad we're not a part of the study, because every time we step on a Balance Board, we can't help but act like we're playing that awesome hula hoop minigame. That's a suspicious amount of fidgeting.