Here’s the newest theatrical trailer for This Is 40 starring Paul Rudd and Leslie Mann. The original comedy expands on the story of Pete (Rudd) and Debbie (Mann) from Knocked Up and how they’re dealing with their current state of life. This Is 40 is written and directed by Judd Apatow and produced by Apatow, Clayton Townsend and Barry Mendel. It’s set for release on December 21.