It has Will Smith in it and he's a super hero (of sorts), how can it not be entertaining? I'm going to keep this short or there will be tons of spoilers, but suffice it to say that while I felt the movie was a bit disjointed and choppy at times, Will, Charlize and Jason all did a great job pulling it all together. If there was a 3-1/2 star option I would have chosen that, but preferring to give the benefit of the doubt I will have to give the 4 stars. In a word, it's entertaining and makes for a fun movie night.
They did a great job at pulling everything together during the credits so that those not very familiar with the show would have some clue. I cried 4 times, which was appropriate based on the length of the movie compared to the show. Overall it was everything I could have hoped for, happily ever after :).