I won't bore with the details, but the end scene sums up the movie nicely.  

Without spoilers, one character is speaking to another character and they are basically asking the question: 'What was the point of all that?'

I concur.  The movie has some funny scenes, but after the movie I felt like the two characters in the last scene, lost and a little confused as to what had happened to the last two hours.

The movie wasn't hard to follow.  It just seemed to lack a real point.