Gene Wilder

Fourth Degree, Gene Wilder is seen here as Willy Wonka.
Third Degree, Gilda Radner, late wife of Gene Wilder

Second Degree: Barbara Walters

First Degrees:
Fidel Castro, also featured on the post that bears his name.

Boris Yeltzin

Michael Jackson is connected to JPII in the Kevin Bacon post.  

Barbara Walters interviewed scores of second-degreers.  I'm sure we'll see Ms Walters mentioned in future posts.