Now, as my gloating best friend is happily reminding me, I am not very familiar with his work. I've only seen him in Skins, "Fires of Pompeii" and gifs of The Thick of It. But having said that, I am very happy with this choice because I really wanted someone older playing the Doctor. Also the fact that I am quite sure the Twelfth Doctor will be very different from my darling Eleven, which is good thing in this case because I will compare less.
And he's pretty awesome already.
So yaay! New Doctor!! And I love that he's a fan.