Daniel Radcliffe, who played Harry Potter, turns 23 today. While he may be a Hollywood leading man and a top-earning superstar, we found that Radcliffe has a bit of an adorable side where his geekdom shines bright. We dug up a video from BBC Worldwide in which he sings The Elements by musical humorist Tom Lehrer.
Here are some other fun nerd facts about Radcliffe:
He's a Bookworm -- Radcliffe delayed the filming of the second and third Harry Potter movies to stay in school and focus on his education.
Potter the Poet -- The Guardian reported that Radcliffe has published poetry under the pen name "Jacob Gershon," a combination of his mother's maiden name and his middle name.