We've seen a couple of posters, but now the trailer for Men In Black 3 has hit the internet, and given us just a tiny bit more of a clue what to expect from the film. In short: familiar gags like the use of the neuraliser; Will Smith jumping off a very tall building and Josh Brolin doing a really, really good Tommy Lee Jones impression.

The plot sees Smith's Agent J travel back in time to prevent the assassination of his partner Agent K (Tommy Lee Jones) in 1969 - which he must do with K's younger counterpart (Josh Brolin). Also appearing are Emma Thompson as another agent In Black, Jermaine Clement, Alice Eve and Michael Stuhlbarg. 

Eagle-eyed viewers will notice that a few of the shots here look a bit odd, which we're putting down to the whole thing being filmed in 3D, but we're optimistic that it will be a return to form after the lacklustre second film. And it's about time someone cast Jones and Brolin as the same person since they always, y'know, kinda seemed like they were.

The film's had more than a few hiccups and delays during production, but let's hope it's all smooth sailing between now and May 25, 2012.