Perkins was the original actor to play the role, but appeared for only the show's first year.
He was the first black actor to play the lead role in a weekly series.
As of 2011, he is the only American actor to play the role.
It took months to find the actor to play the role of Artie.
"The fans love him and I don't think there's a better actor to play the part."
Baker would continue in his role as the Doctor for seven seasons, longer than any other actor to play the part.
Can he hire the actor to play the King and get away with it?
The choice of the actor to play Billy was "absolutely critical" to the film, he said.
After two years of developing, the producers still had not found an actor to play the part.
He was the final actor to play the role in the original Broadway production which closed that year.