Well, the most interesting for me was a Jolly Rancher American Wheat. I made it for our club's "Strange Brew" contest where we drew "strange" ingredients (e.g., licorice, oysters, marshmallow fluff, Jolly Rancher candies, etc.) from a hat. It tasted pretty good and took 3rd in the contest out of about 20 entries. The color was pretty weird, though - a little greenish-gray, because I used the Blue Raspberry Jolly Ranchers.
The beer I was most pleased with was a batch of Amber Ale I made with my first harvest of homegrown hops. It probably wasn't the best beer I made in 2009, but I was really pleased with the results and my family killed the keg in just a few days around Thanksgiving. I think the best beers I made in 2009 were a batch of Altbier, and one of ESB. I think the overall quality of all my beers improved over last year as I improved my ability to control fermentation and lagering temperatures, and made other improvements to my brewing techniques and practices.