“Ken is a really passionate and emotional guy and he digs that Barbie is such a formidable woman”— Michael Keaton   Disney/Pixar and Mattel Toys have unveiled an exclusive behind-the-scenes interview with heartthrob and star of new Toy Story 3 movie Ken. Ahead of his starring turn in the highly anticipated three-quel, which opens in cinemas across the UK on 21 July 2010, Ken talks about his new r…