I also really like it when you see these Arthur actors showing up in dramatic roles in feature films.
Marc Camacho(Oliver Frensky) is in the Robert De Niro movie The Score, and Barney's Version.
Ellen David is a massage parlour madame in Barney's version.
Arthur Holden(Ratburn and Bionic Bunny) is in Barney's Version and is also the radio announcer in the movie about Howard Hughes called The Aviator.
Robert Naylor (DW) played a ten and a half year old boy with severe emotional problems in a very heavy disturbing Quebecois movie called 10 1/2. It's a French language movie as Robert is completely bilingual.