Eight years after they split into two separately traded media and entertainment conglomerates, an investment analyst is calling for CBS Corp. and Viacom to reunite their forces. "A combined company would have a better ability to negotiate carriage with large MVPDs and preserve affiliate fee and retransmission growth rates," wrote Brett Harriss of Gabelli & Co. in a research note published Monday that he called: "Back together now!" The Hollywood Reporter has a complete post on Harriss' report that can be read here.