OPENING: Going the Distance (R) Drew Barrymore and Justin Long star in this comedy as a New York couple who hook up with each other six weeks before she moves permanently to San Francisco to finish grad school. The script is surprisingly serious in its treatment of the challenges of maintaining a long-distance relationship, but it doesn’t come up with anything particularly insightful. The leads — despite being a real-life couple — can’t make us care about their predicament. The bursts of raunchy humor and Christina Applegate’s expert performance as Barrymore’s protective older sister don’t make this movie worth seeking out, but they save it from being completely forgettable. Also with Charlie Day, Jason Sudeikis, Ron Livingston, Jim Gaffigan, Kelli Garner, Rob Riggle, Sarah Burns, and Leighton Meester. (Opens Friday)