The Closer kicked off its final season with an average of 7.2 million viewers while Rizzoli & Isles began its sophomore season with an average 6.4 million viewers. I should have the 18-49 info shortly. Rizzoli & Isles was down more than a million viewers from its season one premiere (7.55 million) but not far from the season one finale (6.56m). The Closer was down over 400K from last summer's premiere (7.66m).
History's Pawn Stars, American Pickers and American Restoration crossover posted some impressive numbers with Pawn Stars averaging 7.6 million viewers.
For those looking for the info on Alphas, Warehouse 13 and Eureka, you can find it here.