It's extremely rare that you will see any of these supplemental documentaries that are really anything other than short films where the main cast and crew get on camera and talk about how everyone was the greatest people that any of them ever met and they were like a family and they felt like they knew each other for their whole lives and they'll be friends forever and blah blah blah blah. In a good documentary, somewhere along the way there will be some insights revealed into the meaning of the movie or interesting stories about the making of the movie (there are tons of these on, say, The Exorcist, for example) or, in the most shining cases, things can be revealed about the intentions in making the movie that can make a bad movie seem a lot better than you thought after you finished watching it. The 2003 Willard remake and Texas Chainsaw III, believe it or not, come to mind.
Unfortunately, in this one all we have is everyone getting on camera and talking about how great everyone else was, and there is also tons of talk about the extensive preparations that were done to make sure that everyone felt like a family around each other in this huge Rhode Island house. Not that there's anything wrong with that, except that Dan in Real Life is just such a drab, uninteresting movie with characters who have absolutely no chemistry with each other, so it was a little sad to see all of these talented actors get on camera and talk about how brilliant everything was. I'm sure they had a great time making the movie, but they just don't add anything to it with this short video, and in the case of this movie, a lot needed to be added...
