What American actor who appeared on the twelfth episode of The Simpsons fourth season was "The Princess Guide" dedicated to?
The Princess Guide:  The episode was dedicated to the memory of Leonard Nimoy, who died two days before the episode aired. The Princess Guide:  Nimoy guest-starred in two "Simpsons" episodes, "Marge vs. the Monorail" and "The Springfield Files".
i don't know