This post is one of several on business heirs apparent. Let us know in the comments whether you think Sam Branson should take up the reigns of Virgin, and be sure to check out the other heir apparent posts.

One might say Sam Branson is a fortunate son, born into a life of money, leadership, and rock-and-roll. His father, whimsical billionaire Richard Branson, carries a net worth of $3.8 billion and maintains a fleet of Virgin-branded enterprises. Branson built this umbrella of companies from the ground up starting nearly 40 years ago.

The Virgin brand soared to prominence in the early 1980s as a record label featuring such acts as the Rolling Stones and Janet Jackson. Ahead of the bubble burst for the compact-disc industry, Branson unloaded this arm of the Virgin empire in 1992, focusing on his pet project -- Virgin Atlantic Airways, which launched in 1984.

Other Virgin progeny include pay-as-you-go mobile-phone service Virgin Mobile (sold to NTL for about 1 billion pounds in July 2006) and Virgin Fuels, which seeks to develop environmentally friendly and cheaper fuel sources for automobiles and airplanes.

Branson's sense of adventure, critical in his business ventures, has also taken him into and across the world's oceans. He has broken speed records in both boat and hot-air balloon, and recently boarded an amphibious vehicle to cross the English Channel in record time.