Ashton Kutcher is primarily known as the former husband of Demi Moore, the star of Two and Half Men and the creator of MTV's Punk'd. What is less known is that Ashton is a savvy business investor in start-up tech companies. His investments include hot tech startups such as Hipmumk, Flipboard, Airbnb and Fab.com as well as many others. Ashton even caused a bit of a stir when he did some "free" in-show promotion on Two and a Half Men of his investments by fixing the company logos on a laptop during his show debut. The show Kutcher’s debut episode drew an astounding 28.7 million viewers and his investments got a lot of free advertising.