Entrepreneur, investor, technology guru, and former burger flipper. Jeffrey Preston Bezos may not be a household name like other well-known billionaires, but you have this former McDonald’s employee to thank for your favorite online shopping venue. No, not Adam and Eve! We mean Amazon.com, the world’s leading online retailer of books, DVDs, electronics, and a whole lot more. Before Bezos came up with the idea for Amazon and became a CEO worth up to $65.2 billion, he held a McJob. Following his father’s example, Bezos took a summer job at McDonald’s as a teenager, manned the grill, and learned the value of hard work, something the Amazon CEO believes you can't learn just in school.