There's something about Diane Keaton and Jack Nicholson together in this film. It's as if they are truly feeding off of each other's energies. Jack & Diane are the perfect mix for Nancy Meyers' finest work to date. It's really, really special.
If Nicholson and Keaton weren't in this, no one would care one whit about the movie. The acting is good (though not their best), the cinematography is excellent, but the story is cliche, boring, and the dialogue is stilted and predictable.