I just got a sixpack of this because A. I want to try all the Octoberfests I can, and B. Harpoon has always been a good choice in my book.
Light and drinkable. Deep copper with little head formation. Malty, but with a hint of acidity. Not sure if that is just a result of pH adjustment or their choice in dark grain. Sweet and lightly hopped. The bitterness seems to come from the dark malts. The aroma is faintly floral and with an interestingly rich malt-grain smell.