Say auf Wiedersehen to Kenneth Mars, who died Saturday at 75. He joined the ranks of the immortals with his roles in Mel Brooks’ two best movies: The Producers, as unregenerate Nazi playwright Franz Liebkind; and in Young Frankenstein as the slush-voiced Inspector Kemp. I had no idea he’d done so much voice work for cartoons like Rugrats, or that he was the voice of King Triton inĀ The Little Mermaid and its spinoffs.