We’ve got a couple of casting stories involve two more senior actors to share this afternoon.  First up, Morgan Freeman has been added to the cast of the “Hangover with old people” comedy Last Vegas.  The story centers on four old friends who decide to throw a Las Vegas bachelor party for the only one of them who has remained single.  Michael Douglas stars as the groom-to-be, and Robert De Niro was recently added to the cast as the wet blanket of the group.  Christopher Walken has also been rumored to be circling a role, but he has yet to officially sign on.  Jon Turtletaub (National Treasure) is set to direct, and I can’t decide if this movie will be terrible or amazing.Hit the jump for casting news concerning the impressive ensemble in Better Living Through Chemistry. [Update: We've added the press release confirming Morgan Freeman in Last Vegas]Additionally, Deadline reports that Jane Fonda has joined the dark comedy thriller Better Living Through Chemistry.  Sam Rockwell stars as a small-town pharmacist who strikes up an affair with a trophy wife (Olivia Wilde) as a result of a loveless marriage.  Things take a turn when the two start using hard drugs and begin plotting the murder of Wilde’s husband.Fonda will apparently be playing a customer of the pharmacy and the conscience of the film.  Judi Dench was previously reported as the film’s narrator, so it’s possible that Fonda is taking over that role.  Michelle Monaghan is onboard as Rockwell’s wife, and the supporting cast includes Ray Liotta, Ben Schwartz, and Ken Howard.  Production is currently underway in Maryland.  Fonda will be seen this summer in Aaron Sorkin’s new HBO series The Newsroom.Here's the press release for Last Vegas:

MORGAN FREEMAN JOINS MICHAEL DOUGLAS AND ROBERT DE NIRO FOR A TRIP TO “LAST VEGAS”

LOS ANGELES – May 17, 2012 – CBS Films and Good Universe announced today that Oscar®-winner Morgan Freeman will join fellow Oscar®-winners Michael Douglas and Robert De Niro in the comedy LAST VEGAS.

Directed by Jon Turteltaub (National Treasure, While You Were Sleeping) from a screenplay by Dan Fogelman (Crazy, Stupid, Love, Tangled),  LAST VEGAS is a comedy about four old friends who decide to throw a Las Vegas bachelor party for the only one of them who has remained single.

Freeman is set to play Archie Clay, an army veteran, who looks to escape the watchful eyes of his son and daughter-in-law and accompany his best friends on a trip to Vegas.

The ensemble comedy is being produced by Laurence Mark (Julie & Julia, Dreamgirls) and Amy Baer.  Good Universe's Nathan Kahane will executive produce along with Lawrence Grey.  Matt Leonetti will co-produce.

Executive Vice President of Production Maria Faillace and Creative Executive Alex Ginno are overseeing the project for CBS Films.  Nicole Brown is overseeing the project for Good Universe which is handling international sales.

Morgan Freeman is represented by CAA and his legal is handled by Sloane, Offer, Weber and Dern.