Get a hold of Will Smith, Emma Thompson, Rip Torn and some other faintly famous people, add in some amazing effects, a simple, unoriginal yet irrelevant plot and you have - MIB3.
*Please note that I have not watched the film in any way, shape or form, except the above trailer. I just fail to find anything with a '3' behind it to be any good. (And yes, that includes Die Hard!).