Summarize the following movie reviews:

1. What begins as an apparently simple tale of sibling interaction reveals a complex web of pain, guilt, and uncertainty.
2. The superb cast certainly deserves much of the credit for that success.
3. For me this film leaned heavily to the hackneyed, but admittedly there were those in the audience who were touched by the film's message.
4. The movie's tone is mostly mushy and tearjerking, bounced occasionally into a tighter, more sardonic humor by DiCaprio andKeaton's performances.
5. Well acted, but not often believable, dysfunctional family drama.
6. An emotionally fulfilling film with wonderful, uplifting elements.
7. Without the humor, the film would have been unwatchably morose.
8. In many ways it looks an awful lot like one of those generic made-for-TV disease-of-week movies.
9. Great actors do what they can in a simple and largely unaffecting story.
10. Any dramatic film can go wrong if it doesn't completely ring true, and Marvin's Room misses the mark.

Summary:
Marvin's Room rises above the pack of dysfunctional family dramas thanks to an impeccable cast that includes Meryl Streep, Diane Keaton, and Leonardo DiCaprio.