Ottawa Comiccon adds Dr. Who, Tron and You Can't Do That On TV actors

Ottawa Comiccon is adding three new names to its list of celebrity guests, including a doctor, a man who plays a computer program and a sketch comic.
The annual celebration of geek culture announced Wednesday it would be adding to its celebrity ranks Matt Smith, the 11th doctor in the hit TV series Doctor Who. Smith first appeared on the show in 2010, when, at 26 years old, he became the youngest actor to play the role.
He appeared in three regular series, as well as the Doctor Who mini ser