Boring stocks can bring exciting returns, Mark Hulbert discovers, as his research reveals stocks exhibiting the least historical volatility on average comfortably outperform the most "exciting" (i.e., volatile) issues. One believer in the boring-is-beautiful school, Guggenheim Partners' Nardin Baker, likes these stocks: SO. D, KMB, CL, COST. Too volatile are AAPL, GS, C, MS, HPQ. MET.