David Tennant and Matt Smith took part in a Q&A panel at the Wizard World Comic Con event, The Doctors, in New York on Saturday.
Check out some video  highlights from the chat below:

David Tennant on his favourite moment of Matt Smith's Doctor...


David Tennant & Matt Smith talking about their first regeneration scene in the TARDIS...


 David Tennant and Matt Smith on what they brough to the role compared to others...


Many thanks to Melissa MJ Boneta