“Tammy”, a film about an overweight woman who is fired from her job, discovers her husband is having an affair and goes on a road trip with her alcoholic, foul-mouthed, diabetic grandmother, has added two new cast members. Already, the film is set to star “Bridesmaids” star Melissa McCarthy and Ben Falcone. Now Susan Sarandon (“Cloud Atlas”) and Mark Duplass have joined the film as well.

I’m not completely sold on this film. Road trip films tend to be either very funny or terrible to me, so we’ll see how this one turns out.

Lukas Eggen can be reached at eggen.lukas@gmail.com.