This Trilogy Slaps.
Men in Black (1997) New York cop James Edwards (Smith) finds himself recruited to the secret MiB agency, where he is partnered with K (Jones) and sent to investigate an alien prediction of the end of the world. Initially, the partnership doesn't gel, but with fearsome alien adversaries to take on K and J come to rely on each other.
Men in Black 2 (2002) finds K working as a postman, unaware of his former heroics alongside Agent J. However, when J uncovers a secret alien plot organised by the seductive Serleena (Lara Flynn Boyle) he knows he will require the skills of his former partner to foil such a dangerous enemy.
Men in Black 3 (2012) J is forced to journey back in time to the 1960s to try and rescue K, who has been assassinated with such extraterrestrial efficiency everyone on Earth appears to believe he has been dead for 40 years. With the aid of a terrifying 'time jump', J hooks up with a younger Agent K (Josh Brolin) and together the pair attempt to change the course of history.
Oh… I wonder why this is so suddenly cheap?