'Men In Black 3' hits theaters on May 25th and there's a new trailer online.

In this one, Will Smith goes back in time to the 1960s and hooks up with the young version of Tommy Lee Jones' character, who's played by Josh Brolin. (Who does an AMAZING job, by the way.)

Check it out here:

I know I'm going to make sure and catch it on the big screen! How about you?