'Doctor Who': Edgar Wright, Billie Piper and more tweet their Whovian love

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It's a very happy birthday for "Doctor Who," celebrating 50 years since its inception in 1963. The Whovian universe is large and strong, growing in numbers all the time, but you might not know that the show also has a large celebrity following.

As you prepare for the 50th anniversary special, check out the birthday wishes for the show from some of the world's leading nerds and share your love in the comments.

Finally, this isn't a tweet but something that just needs to be shared. Behold Ron Burgundy ( Will Ferrell) and his "Doctor Who" confusion:

Photo/Video credit: BBC America/IGN