Watch Men in Black 3 Streaming Now on Peacock. Synopsis: Agent J goes back in time and joins forces with Agent K’s younger self to save his partner, the agency and mankind’s future. Starring: Will Smith, Tommy Lee Jones, Josh Brolin, Jemaine Clement, Michael Stuhlbarg, Emma Thompson #Peacock #MenInBlack3 #MenInBlack #WillSmith #Shorts Peacock is your go-to for hit movies, TV, live sports, and more. With the streaming service from NBCUniversal, you can watch new movies from theaters, current hits from NBC and Bravo, nonstop action from WWE, Premier League, Big Ten, and tons of other sports. Plus, stream exclusive Originals, NBC News, and your faves like The Office, Suits, Modern Family, and Yellowstone. Peacock is currently available to stream within the United States. Get More Peacock: ► Follow Peacock on TikTok: tiktok.com/@peacock ► Follow Peacock on Instagram: instagram.com/peacock ► Like Peacock on Facebook: facebook.com/PeacockTV ► Follow P...