She made her debut in the episode airing on 21 June 2000.
Bill was introduced during the episode airing on 6 February 1984.
The series ran for two years, with episode 86 airing on September 21, 1987.
She made her debut in the episode airing on 5 February 2006.
It marked the first new episode airing in almost eight months.
She made her debut in the episode airing on 12 October 2006.
She made her first appearance during the episode airing on May 27, 2011.
He retired in mid-1995, with his last episode airing on August 18.
The show ran for two series of six episodes each, with the final episode airing on 8 October 1989.
She made her debut during the episode airing on January 21, 1983.
