Not sure about the Addams Family comparison but it was very Wes Anderson. If you like MK but missed his other movies I'd recommend a film fest at home. Royal Tennenbaums, Rushmore, and Bottle Rocket in particular.
I have yet to see this, but I'm glad the WA fans like it. My favorite movie of his is "The Darjeeling Limited". Mostly for the very first running to catch the train scene and I adore Adrien Brody.
It took me longer to warm up to "Rushmore". I think moving to Houston helped, since I live in the neighborhood where a lot of it was filmed. In fact, my husband patronizes Max's dad's barber shop! It's still there, and looks pretty much the same.
Saw it last month and agree with the a-typical Wes Anderson quirky type of storytelling movie. The film team did a great job in capturing the visuals and clothing et al of a past era. Bruce Willis and Ed Norton each did a fine acting job beyond what you'd somewhat expect. Then again Ed is far more talented than many folks give him credit.
Was it the best film I saw of the 2012 class? No. However you could invest 2 hours and get less of a return? Sure. I'd check the film out.