Saw Wordplay last weekend. http://www.imdb.com/title/tt0492506/
Interesting documentary about people that make and do crosswords. Includes interviews with Bill Clinton and Jon Stewart. Done in the same style as Spellbound.

Also saw An Inconvenient Truth http://www.imdb.com/title/tt0497116/
It is basically Al Gore's travelling presentation that has been filmed. It is actually quite good. Takes a dry subject and presents it with dramatic flair.