7. Red Bull

Red Bull first became available in the United States right before the 2000s hit, and the brand has used the past 13 years or so to create and dominate the energy drink sector. They've taken over from Mountain Dew as the "extreme" sports drink, and is the "Q-tip" and "Kleenex" of getting hopped up on taurine.

The two investors in Red bull each spent $500,000 of their own money on the company in the late eighties. In 2008, Forbes estimated each to be worth $4 billion.