Pineapple Express.  Another movie by the "Apatow" crew that failed to live up to the hype.  I'm becoming more and more convinced that this genre peaked with The 40-Year-Old Virgin.  I mean, Knocked Up was pretty funny.  Superbad, IMHO, was just "mildly amusing".  Ditto Pineapple Express.  
I would be remiss, however, if I didn't mention how fucking awesome Danny McBride was as "Red".  He MADE the movie for me, his scenes, his delivery...it was the only thing that really made me LOL.  I give it a C, and it woulda be a C- if not for McBride.
Oh, and my 4 1/2-year-old son saw The Pink Panther 2 which he described thusly:  "It was about a detective on a plane, who had a tough adventure.  Like Indiana Jones but not really.  But I was tired, so I left before it was over, and Mama was very mad".  So I guess that would be an F?  I mean, he didn't even stay, and couldn't even rememember the title, I had to look it up for him.