What Have Been The Most Successful Products From Shark Tank?

As world-renowned investor Mark Cuban explained, "Everybody wants to be that person who can just have an idea in their garage, in their bedroom ..." (via The Daily Show). The sharks can take your college invention to the next level. "If we say yes they go from being just a business to being that guy, that business," he added. However, not all business proposals show promise — far from it, in fact.

One of the most ill-advised pitches was the so-called "Ionic Ear" from way back in Season 1. "The worst pitch is probably the crazy engineer who had a Bluetooth device that would only work if you surgically put it in your ear," fan-favorite shark Barbara Corcoran told USA Today. According to Corcoran, a doctor had to surgically remove the device in order to recharge its battery. Suffice it to say, the ear implant didn't take off. Perhaps even stranger, a Season 3 contestant claimed he could harness the spin of the earth with a world-class generator, turning it into a renewable energy source (plus solid gold was one of the byproducts, somehow?) ... if it sounds too good to be true, it probably is.

Sometimes, the sharks lose out too. In Season 5, all five judges joined forces to invest in a product called "Breathometer," a breathalyzer attachment for smartphones. Unfortunately, due to faulty scientific evidence, Breathometer quickly folded. Mark Cuban still regrets his dipping into his wallet for this one.