The real reason why Sean Penn wasn't at the Oscars ceremony despite winning an award has been revealed. Considering the academy awards are the perhaps the biggest night in the film industry, it's always a surprise when the top dogs in Hollywood don't show up. Although some actors are reportedly banned, including Will Smith after his infamous altercation with Chris Rock, and Richard Gere for his comments about China and TIbet, it's a rare occurrence when someone who is nominated simply doesn't show up. So there was certainly some confusion last night at the Dolby Theatre when American actor and...