Desperate to beat fellow celebrity philanthropist Jeremy Piven's haul of $280,000 during a 2009 charity auction for a children's nonprofit, Theron threw in a last-minute offer of a seven-second liplock. "Swine flu is going around. This is high-risk kissing!" she joked. The winner – a woman who plopped down $140,000 – ended up with a 20-second onstage smooch.