Kevin Carr at Film School Rejects provides 41 Things We Learned from the Dracula commentary.
Here are five of my favorites…
16. Dracula’s infamous line “I never drink wine” was not in the book or the stage play. However, after it became popular from the film, it was added to the dialogue of the stage play.
20. Several scenes in the script described fangs for Dracula, however Lugosi never wears them. Even though the Count in Nosferatu had fangs, the vampires from the early Universal films did not have them.
25. Originally, Stoker planned to call the title character Count Vampyr. However, he stumbled upon the history of Vlad Tepis and his name Dracula (meaning “son of the Devil”).
32. The shot of Renfield crawling at the fainted maid is not as sexual or violent as it first appears. In fact, he is trying to catch a fly that has landed on her. This was edited out of the English-language version but left in the Spanish-language one.
34. Originally, Lugosi was not considered for the role in the film. Trade papers suggested Conrad Veidt (the sleepwalker in The Cabinet of Dr. Caligari). The studio wanted Lon Chaney, and they ended up offering him a three-picture deal which included a talkie sequel to The Phantom of the Opera. However, Chaney died before this could be done. After several other considerations, Lugosi got the role with a $500 per week salary.