Ted Cassidy unusual character roles. His most famous role was Lurch on "The Addams Family" (in which he feigned playing the harpsichord). He also played the character named Thing (associate producer Jack Voglin would take over the "Thing" role in scenes with both characters). Though the character of Lurch was intended to be mute, Cassidy ad-libbed his signature line, "You rang?" The subtle humor and the deepness of his voice was immediately a hit. Thereafter, it was a recurring phrase written into the script. Cassidy would reprise the role of Lurch in later appearances. In the "Batman" episode "The Penguin's Nest" (1966),
The Doctor (Doctor Who) footage. Tom Baker did reappear, but as "the Curator", an ambiguously different character who he was not credited for playing. A voice actor, John Guilor, recorded a line of audio impersonating the First Doctor, for which he was credited as "Voice Over Artist". In other multi-Doctor stories, the multiple actors are all credited as "The Doctor", the exception being "The Three Doctors" (1972–73), which credited William Hartnell, Patrick Troughton and Jon Pertwee as "Doctor Who" as the 1972 serial preceded the practice of crediting the character as "The Doctor". In "Human Nature" (2007), the plot involves the Tenth Doctor altering