Which  "Star Wars" spin-off of 1978, directed by Steve Binder, did Wookiee Planet C make appearances in?
Kashyyyk: Kashyyyk ( , or ), also known as Wookiee Planet C, is a planet in the "Star Wars" universe. Kashyyyk:  Kashyyyk made appearances in the "Star Wars Holiday Special" and "". Star Wars Holiday Special: The Star Wars Holiday Special is a 1978 American musical science fiction television film set in the "Star Wars" galaxy.
Star Wars Holiday Special