Like the vast majority of Smith's movies, there are cameos from actors in his other movies (like Matt Damon and Jason Lee). While Smith is known for making pretty vulgar comedies, this is about 95% drama and 5% comedy, and there is no Jay and Silent Bob to be seen. While there is swearing in it (as one of the Amazon reviewers is apparently shocked by), it is much more toned down from all his other movies.
The DVD just has the movie. No extras of any kind. The video transfer is okay but not great, which is fine, given that it is not packed with special effects. It would have been nice to get some deleted scenes, cast interviews, or a commentary track. While I cannot say this movie is going to appeal to everyone, even die-hard fans of Kevin Smith, it tells a very good story and is well-written and acted. The little girl who plays Gertie (Raquel Castro) pretty much steals every scene she is in. If you accept that you are not getting comedy in the same vein as Clerks, Mallrats, or even Chasing Amy and accept that it is going to be different than what you might expect, it is definitely worth checking out.