From Beer Advocate:
Description:Often released as a fall seasonal, Pumpkin Ales are quite varied. Some brewers opt to add hand-cut pumpkins and drop them in the mash, while others use puree or pumpkin flavoring. These beers also tend to be spiced with pumpkin pie spices, like: ground ginger, nutmeg, cloves, cinnamon, and allspice. Pumpkin Ales are typically mild, with little to no bitterness, a malty backbone, with some spice often taking the lead. Many will contain a starchy, slightly thick-ish, mouthfeel too. In our opinion, best versions use real pumpkin, while roasting the pumpkin can also add tremendous depth of character for even better results, though both methods are time-consuming and tend to drive brewmasters insane.
I plan to try them all this Fall! :)
9/26: Shipyard Brewery Pumpkinhead Ale. A great beer! Nice mild pumkin flavor with a touch of spice.
9/30: Baffalo Bill Brewing - America's Original Pumpkin Ale. Made with real pumpkin. Good stuff! Maybe a touch too much spice in it, but a nice light brew. Definitely reminds me of Fall.