I found the movie rather dull until Amy Poehler arrived on screen, but that's not until about 2/3 of the way through. Some of the scenes from the musical are great, but I'm not sure it's worth sitting through the rest of the movie. Maybe on DVD?
This is one of the most intense, powerful movies I've ever seen. Parts of it were hard to watch -- I'm starting to tear up again just thinking about it -- but the Liberian women's story is so inspiring that I'm sure I'll remember it forever.