And as it turns out, badassery is also handed down through the bloodlines. Just ask ...

Whether you believe genetics or upbringing is more important to how a person's life turns out, you can't deny that talented people tend to pop out of families in bunches. Michael wasn't the only Jackson kid who could sing.

6 The Gracies

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The Famous One:

Royce Gracie is to UFC and MMA fighting what Wayne Gretzky used to be to hockey -- the one name even a novice fan will know. He won three of the first four Ultimate Fighting Championship tournaments and in general is the superstar who helped make MMA a big deal.

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"I'm just gonna keep on punching until people take notice."

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The Family:

Royce came from a long, long line of MMA ass-kickers.

In 1925, Carlos Gracie founded a fighting academy to teach a new style of fighting called Brazilian jiujitsu. He's a demigod to martial arts fans, as this was the style that eventually became mixed martial arts and the UFC. Also, he was pretty good with a penis -- he fathered 21 children. More than half of them became black belts in BJJ, like he was building some kind of clone army.

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To think our own measly ambitions begin and end with producing a Little League team.

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But despite creating the art form, it was Carlos' brother Helio who perfected it. In his life, Helio had 19 professional matches, mostly against much bigger opponents, including former world wrestling champion Wladek Zbyszko, who was twice his weight, and sumo wrestler Massagoishi. Despite serious weight disadvantages, Helio only lost two of his matches.

Ironically, it was one of his losses that proved to be the greatest fight of his career. At 42 years old, Helio held his own against his 24-year-old former student Waldemar Santana in a no-holds-barred match before finally being knocked out ...

... after three hours and 42 minutes.