Christina Hendricks is having a major month. The final episodes of Mad Men begin airing this Sunday, April 5, on AMC, and her latest collaboration with Ryan Gosling, the film Lost River, hits theaters on April 10. In addition, Christina has a brand-new look! We caught up with the spokeswoman for Clairol's Nice 'N Easy to chat about her new blond hair, saying goodbye to her Mad Men character, Joan