Scarlett Johansson, David Arquette, Anna Kendrick, and Justin Bartha were out last night to support Art of Elysium's Pieces of Heaven art auction in LA. During her break from shooting We Bought a Zoo with Matt Damon, Scarlett posed with the charity's founder, Jennifer Howell, and placed bids on the items up for grabs. Scarlett's on the list of presenters at Sunday's Oscars — have you filled out Buzz's ballot for a chance at winning a big-screen TV? David, who is fresh out of a stint in rehab, attended after recently sitting down with Oprah. Their interview, which airs today, includes David sharing about his lifelong battle with alcohol and what drove him to seek help. Other long-term fans of the organization like Justin, Elijah Wood, and Topher Grace turned out looking casual after suiting up for last month's Heaven Gala. They also put their John Hancock on a white Chrysler that's going to the highest charitable bidder. Twilight's Anna Kendrick picked up a pen to support the cause, as did Ginnifer Goodwin and adorable couple Dave Annable and Odette Yustman.