David Tennant has announced his decision to leave his role as the Tenth Doctor on Doctor Who after the four 2009 specials, opening the door for a new actor as the Eleventh Doctor when the show returns for a full season in 2010.

I said before that I wouldn't be surprised if the final 2009 special ended with a regeneration scene, and it looks like I called it exactly right.

I'll miss him. Tom Baker's Fourth Doctor is and always will be my Doctor, but Tennant's Ten is a close second.