Parks and Recreation: Christmas Scandal (2009)
Either way, this is a really bizarre show.
I can't decide whether or not I enjoyed watching it. The show felt very character-driven, so I expect it's better the more you see it. Not that I have much interest in testing that theory, mind you.
The plot focused on an imagined sex scandal involving the main character and a local politician. Most of the humor revolved around the absurdity of a small town trying to pretend it's a big city, and it worked most of the time.
This one was more set at Christmas than it was Christmas-themed. For what it's worth, the backgrounds contained plenty of decorations, and a few of the B-plots were holiday related. Still, if you're looking for something to fill you with Christmas cheer, you'd best look elsewhere.