Paul Williams' character watches Lorne Greene's character walk by rather officiously and starts singing the theme to "Bonanza." Green had played Ben Cartwright on the long-running show that, as of this episode airing, had only been off the air for four years.
The maid of the mayor of Poenari is seen knocking on his office door, speaking German. Given the setting is Transylvania, which is in Romania, she would more likely be speaking Romanian, not German.