Our own James Rocchi said that In the Shadow of the Moon is "one of the best science documentaries in recent memory, and also much more." Directed by David Sington, the film features new interviews with the surviving Apollo astronauts and archival footage of the moon missions. I'm a space nut from way back and I'm sorry I missed this in theaters, but I plan to sit very close to the television when I watch this. ThinkFilm's DVD appears to be a bare-bones edition.
In the mood for a coming-of-age tale from Australia? Introducing the Dwights might tickle your fancy. Revolving around a "somewhat eccentric family" of entertainers, Erik Davis called it "sweet, quirky, sincere." (You'll have to read his review again to be reminded why he was left blushing at one point.) Warner Independent's DVD doesn't appear to have any additional features of note, so a rental might do the trick.
Other indie releases include John Turturro's musical drama Romance & Cigarettes, with an audio commentary and deleted scenes, and comedy / drama / romance Blue State, featuring Anna Paquin and Breckin Meyer.