First off I posted a while ago the trailor to the movie "Young @ Heart." About the old folks doing rock n' roll.
This Documentary looks good as well. Plus it has Ben Stein. It is called "Expelled: No Intelligence Allowed."
And here is another that is opening soon. It is the same guy that brought us Supersize Me. It is a movie about looking for Osama. Titled "Where in the World Is Osama Bin Laden?"