Ben Affleck was back in LA yesterday after a stint on the Puerto Rico set of Runner, Runner, spending the day with his wife and three kids. Ben kept an eye on Violet and Seraphina Affleck as they headed out together, while Jennifer Garner carried their youngest, Samuel Affleck. Jennifer's been balancing watching their little ones while focusing on her own movie, The Odd Life of Timothy Green, which hits theaters this week. Ben has another gig lined up already. At next Sunday's Do Something Awards, Ben will present a $100,000 prize. The Do Something Awards air on VH1 Aug. 21.