Enjoyable, not exactly Oscar material
I saw Hancock on the 4th of July and wasn't disappointed. It wasn't exactly like seeing Casablanca, and I was definitely entertained. I thought that overall the actors did a "good job" and that the story was interesting. The explanation of Hancock's powers took me by surprise. A couple of people have suggested to me that they are setting up the movie for a sequel and/or prequel, and I could see that happening. There is some language, which might upset parents with younger children, even though ironically some of the language is delivered by younger children and there's plenty of violence, although very little blood.
I thought that the ending (except for one "big" thing) was fairly predictable, and that's okay. I think that this was a movie where the producers wanted the audience to have an overall positive experience.
To me, this is one of those movies I'm glad I saw, that I won't buy on DVD, and that I will watch if its on TV.