I watched this movie with no expectations, good or bad - I found it on the shelf at Blockbuster by chance and decided to give it a try. The plot is a simple one and Affleck pulls off a strong lead role (he is good at comedy), with other members of the cast also doing a good job. His annoying, excentric character plays particularly well off James Gandolfini's gruff family man.
It is a really fun movie to watch and posses that feel good factor that will get you through those holiday blues. I recommend this movie and give it a solid 4/5 for solid entertainment.