These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: Dastardly and Muttley in Their Flying Machines
Awesome Music: When Dick Dastardly leaves Muttley to drop to the crocodiles in the Magnificent Muttley short "Movie Stuntman", such music starts to play.
Ear Worm: STOP THE PIGEON!, STOP THE PIGEON!, STOP THE PIGEON!, STOP THE PIGEON!, STOP THE PIGEON!, STOP THE PIGEON!, STOP THE PIGEON!
The background music, especially the rinky-tink piano chase music, would be used on numerous H-B shows henceforth up to around 1980. The New Scooby-Doo Movies episode "The Ghost of the Red Baron" uses it virtually exclusively.
Fridge Brilliance: Given that attempting to catch a pigeon is preferable to fighting in World War I, the Vulture Squadron's failures may be on purpose.
In "Fur Out Furlough", when the General offered a 30-day furlough to whoever caught Yankee Doodle Pigeon, Zilly planned to spend it in Miami and Klunk planned to spend it in Hawaii.