Mamma Mia! star Amanda Seyfried has her sights set on portraying tragic singer/songwriter Eva Cassidy on the big screen. As she promotes her new movie portrayal of former porn queen Linda Lovelace, the actress admits she has another biopic or two on her mind. She says, "I'd like to play Eva Cassidy, I'd like to play Hillary Clinton." The 27 year old is the perfect age to portray Cassidy, who died of melanoma in 1996, aged 33. Seyfried adds, "Eva has an amazing story and then she was gone. She has this whole catalogue of music - she's amazing. It's tragic. I love singing too, I love her music and I would love to play her. That would be fun."