Previously thought to be the front runner for the role, the choice seems to be wildly popular thus far amongst Whovians across the globe.
Capaldi, is no stranger to the Whoniverse either. He previously guest started as Caecilius, along with former companion, Karen Gillan ("Amy Pond") in the 2005 episode "Fires of Pompeii." He also appeared in an episode of Doctor Who spin-off, Torchwood, in 2006.
At 55, Capaldi is the oldest person to play the Doctor in the newest set of Doctors, and is the same age as the First Doctor, William Hartnell, when he began the show 50 years ago.
Fans have have been seeking a return to an older incarnation for quite some time now, having grown tired of the love stories that seem to plague younger versions of the Doctor. With Capaldi stepping into the role, those concerns could be a thing of the past. However, we all know that time can be rewritten and first things first don't necessarily have to happen in that order.
The 50th anniversary special will air on November 23, and Whovians receive their bittersweet Christmas gift when they say a final "Geronimo!" to Matt Smith during the Christmas special.