Two brand-name, time-tested companies -- sporting an average yield of 7% -- are ripe for the picking amid a historic bout of volatility on Wall Street.Though the stock market is a bona fide wealth creator for those who exercise patience and perspective, it's not an investment vehicle that gets from Point A to B in a straight line.Over the last two months, Wall Street has bluntly reminded investors that stocks can also move down. The Dow Jones Industrial Average and S&P 500 (^GSPC 2.51%) have dipped into cor ...