Yesterday I came upon a very old Disney cartoon, called
Farmyard Symphony, on YouTube. It has no plot, but it's a "name that tune" of classical melodies. They're changed in orchestration and sometimes tempo, making them trickier to spot. Here's what I was able to identify:
Beethoven: Pastoral Symphony (3rd movement)
Nikolai: Overture to "The Merry Wives of Windsor" (I think)
Rossini: Overture to "William Tell" (including the opening section, which is the least used in cartoons)
Rossini: Overture to "The Barber of Seville"
Mendelssohn: Spring Song
The Campbells Are Coming
Rossini: Overture to "Semiramide" (somebody there really liked Rossini!)
Verdi: La Donna e Mobile (ironically used for a courting song)
Rossini: Overture to "William Tell" (yet another part)
Liszt: Hungarian Rhapsody No. 2
Wagner: Overture to "Tannhäuser"
There were some other tunes I knew but couldn't place, and some that sounded like classical tunes which I couldn't recognize, so this list is incomplete. All that in an 8-minute cartoon!
On another subject: I recently watched "The Revenge of Dr. X" from the Mad Scientist collection I got a few months ago. There's no one called "Dr. X" in it, nor any doctor with an unknown name, nor any revenge theme. The movie is also known as "Venus Flytrap." It's about a NASA rocket scientist who goes to Japan to create an ambulatory, puppy-eating monster plant in order to prove that humans are descended from plants. There's a hunchback who plays the organ but apparently knows only the opening measures of Bach's Toccata in D minor (an obligatory music skill for anyone who works with mad scientists).
Wikipedia says it's based on an earlier screenplay by Ed Wood, which would explain a lot.