Men in Black 3, in my opinion, was a little bit better than the first movie! I really liked this movie. Will Smith and Tommy Lee Jones are really good (including young Tommy Lee Jones). It was a fun ride all the way through. The Villain was way better than the bad guy in the 2nd movie and he plays his role very nicely. The whole time travel part of the movie was different and I think it worked nicely.
In the end, we find out why Agent Kay chose agent Jay in the first movie. I think they did quite nicely and it was good they focused more on the two men in black. Call me crazy but I will rate this 4/5 OR 8/10