Forgotten Sylvester

On today's Tipping Point a contestant was the question which actor played the Fourth Doctor in Doctor Who. They were given 3 options of William Hartnell, Tom Baker and Sylvester McCoy. The contestant said they had not heard of McCoy and rightly went for Baker as the answer. McCoy's tenure in the title role saw the show having it's worst ratings in it's and led to the cancellation of the show in 1989 though it came back with a bang in 2005