PepsiCo and BlackRock offer attractive yields, reasonable valuations, and strong growth prospects.Dividends have accounted for the lion's share of returns stock investors have received during the last several decades. Going back to 1960, a whopping 85% of the total returns of the S&P 500 can be attributed to reinvested dividends and the power of compounding.Not all dividend payers are cut from the same cloth, however. A recent report by Hartford Funds showed that companies with payout ratios under 75% tend ...