Benjamin McKenzie is an LAPD Cop

OFFICER BEN

Former O.C. star Benjamin McKenzie shares a laugh with a costar while filming a new television pilot, LAPD, on Monday along Sunset Boulevard in West Hollywood, Calif.

In the ensemble cop drama, which follows a group of officers in Los Angeles, Ben, 30, plays a reserved rookie cop.

LAPD is expected to air midseason on NBC and will most likely replace ER (series finale airs February 2009).

Lately, Ben, who spoke at the 2004 Democratic National Convention, has been campaigning for Barack Obama.

20+ pictures inside of LAPD cop Benjamin McKenzie…