Gary Magness

Inherited hundreds of millions of dollars in stock from dad, Bob Magness (d. 1996), founder of cable television titan TCI, which merged with AT&T in 1999 in a $54 billion deal. Owns water rights in Colorado through ranch holdings; also invests in oil, gas, cattle. With wife, Sarah, produced critically acclaimed movie Precious. Next project: documentary based on young adult book series that follows indigenous Brazilian tribe. Leader of off-road truck racing team Mango Racing; travels to races, mostly in Mexico and Las Vegas. Prize money goes back to local villages in Mexico.