Earlier today, Jennifer Garner and Seraphina Affleck made a stop at one of their favorite LA spots, the Brentwood Country Mart. Jen and Sera held hands and carried on a conversation heading back to their car with a snack from Farmshop. Busy mom of three Jennifer is back in town this week following a quick visit to New Orleans, where preproduction is under way on her next film, The Dallas Buyer's Club. Jennifer joins Matthew McConaughey in the flick, which is loosely based on the real-life struggle of an AIDS patient who smuggled antiviral medications from Mexico to battle his disease. Meanwhile, Ben Affleck attended the Human Rights Watch's Annual Voices of Justice Dinner last night in LA, where he talked about his Eastern Congo Initiative organization.