In his book, "Trump: The Art of the Deal," Donald Trump (left, in 2013) mentions that he flirted with the idea of attending film school but chose real estate instead. Smart move. Since being given the keys to his father's firm in 1971, Trump has built The Trump Organization and subsequent Trump Entertainment Resorts into a multi-billion-dollar empire. His son, Eric (right), at age 30, is executive vice president, Development and Acquisitions, at The Trump Organization. In 2006, he founded The Eric Trump Foundation, which has pledged and donated nearly $30 million to St. Jude Children's Research Hospital.