Apple took back its spot as the most valuable company in America. The Cupertino, Calif.-based company announced record profits which allowed it to leap-frog Exxon and landed comfortably in its throne. The house that Steve Jobs built now has a market value of over $400 billion. Think about that for a second. If Apple was a country it would be the 25th wealthiest nation in the word. We know Apple's at the top, but what about the other tech companies? Which are banking more money than the rest? We did a little digging and figured out which 10 are the most valuable and then, for fun, figured out which countries they're more valuable than. It's big business, kid.