The Ex doesn't have a ghost of a chance: It plays like an ex-movie. Maybe in some early stage, it was alive. But now it clanks on screen like Marley's Ghost.
When the script sold, it must have contained some exploration of the farcical premise: A married couple reaching crisis-point after the birth of their first child. That clicked comedically in Flirting With Disaster (1996). And this movie takes it in potentially fresh directions only to dead-end in lame-o jokes.
The Ex (MGM) Starring Zach Braff, Amanda Peet, Jason Bateman, Charles Grodin, Mia Farrow. Directed by Jesse Peretz. Rated PG-13. Time 90 minutes.