Strangelove
I absolutely loved this TV show, and from what I can tell, they're finally going to make it into a feature film. Every single actor has confirmed they're coming back, and the creator of the series is writing it, Ron Howard's going to direct, so I think this is really happening.
http://en.wikipedia.org/wiki/Arrested_Development_%28film%29#Feature_film
http://en.wikipedia.org/wiki/Arrested_Development_%28film%29#Feature_film