Sir Ian McKellen doesn't even need to act. He IS Gandalf. 🙂 I love him and he was so perfect. The first time I saw him in FOTR when he told Frodo, "A wizard is never late, Frodo Baggins. Nor is he early, he arrives precisely when he means to." I just got shivers throughout. I just said, "Now this IS Gandalf". 🙂