Justin Timberlake and Jason Segel share a laugh after filming a scene for their new film, Bad Teacher, on Sunday (March 21) in Los Angeles.Cameron Diaz was also spotted leaving the set!E! caught up with JT’s girlfriend, Jessica Biel, and asked her what she thought about the film! “It sounds like it will be so funny,” she shared. “Obviously, I’m superexcited for him.”15+ pictures inside of Justin Timberlake and Jason Segel leaving the set of Bad Teacher…!