"Post Grad" is destined for the well-filled ranks of what might be called amnesia movies. It's not actively bad, just terribly forgettable.

Which is a shame, because it has a few things going for it. It takes on a timely and substantial subject: the dismal job market for new college graduates. It's cast with actors who, though not A-list, deliver the goods.

Unfortunately, there are mostly no goods to deliver. Screenwriter Kelly Fremon and director Vicky Jenson squander the movie's potential by turning it into a vapid romance.

Photogenic Alexis Bledel from TV's "Gilmore Girls" delivers a lively performance as Ryden Malby. She's fresh out of school and full of ambitious plans. But those plans evaporate when her dream job goes to a rival. She suffers the humiliation of having to move back in with her family and the further disappointment of being unable to land any decent job -- least of all one in her dream field of publishing.

The subplot, which ends up devouring the movie, has to do with the romantic triangle of which Ryden is one corner. The others are Adam and Santiago, played respectively by Zach Gilford and Rodrigo Santoro. Adam is openly in love with Ryden. Alas, she regards him only as a friend, whereas between Ryden and Santiago it's lust at first sight.

There's screen chemistry aplenty between actors Bledel and Santoro, but none between Bledel and Gilford. In the latter's defense, it would be a challenge for even the most dynamic actor to breathe life into the lovelorn wimp who is Adam. The dead air between Bledel and Gilford unfortunately sucks the credibility out of a key plot turn in the final act.

Dead air is not a problem in the Malby household. Relentlessly upbeat Dad (Michael Keaton) runs a luggage store, has a weakness for questionable financial schemes and is the household's semi-successful handyman. Grandma (Carol Burnett) is irascible and obsessed with dying. Younger brother Hunter Malby (Bobby Coleman) is "weird" even to his mother, and Mom (Jane Lynch) provides what passes for common sense in the eccentric clan.

Keaton and the others make the most of their characters, giving the movie an occasional laugh and even a certain ephemeral charm. But "Post Grad" is still a trifle that's unlikely to stick with you much longer than it takes to walk from the theater to your parking space.