Josh Brolin steps into Tommy Lee Jones' shiny shoes in first snippet from "Men in Black 3"

Will Smith and Tommy Lee Jones return as Agent J and Agent K

DreamWorks announces a giant list of actors in negotiations for Steven Spielberg's movie about the 16th president

Sony has tapped the acclaimed actors for two of its high-profile projects

Director Barry Sonnenfeld, executive producer Steven Spielberg are on board for sequel

Director/co-star cites creative differences.