Frederick, alone with the Creature, first panics - then finds his senses and tells the monster how wonderful it is. As he comforts his now-crying creation, his revived passion to show the world what he - they - have and will accomplish builds and builds, and he finally embraces his heritage:
Inga: Dr. Fronk-on-steen! Are you all right?
Frederick:MY NAME IS FRANKENSTEIN!
For bonus points, Frederick pronounces the name with a German-like accent, the way the late doctor's own countrymen would.
The Monster's Shaming the Mob speech after gaining intelligence, with Peter Boyle throwing an effective dramatic performance right in the middle of all the goofiness.
"PUTTING ON THE RIITZZZ!" *stomp stomp*
On the subject of that scene, consider the muscle control and memory needed to perform a song and dance routine such as that. Sure it might not seem it, but the monster earlier could hardly walk and only make groaning sounds. To learn to move and sing as much as he did, not to mention memorize it all, shows that he can do pretty well even with an "Abby Normal" brain.
Awesome Music: The soundtrack of the film, particularly that violin motif, is played straight and would fit perfectly in a serious movie.
Chewing the Scenery or not, Gene Wilder with his "LIFE! LIIIFE DO YOU HEAR ME?! GIVE MY CREATION LIIIIIIIIIIIFE!" is so over the top that it passes ham and goes right into iconic.
And preceded by a truly spine-tingling and awe-inspiring speech that could have come straight from a classic Universal Horror film.
"From that fateful day when stinking bits of slime crawled from the sea and shouted to the cold stars, 'I am man!', our greatest dread has always been the knowledge of our own mortality. But tonight, we shall hurl the gauntlet of science into the frightful face of death itself! Tonight, we shall ascend into the heavens, we shall mock the earthquake, we shall command the thunders, and penetrate into the very womb of impervious nature herself!"
"So this is where it all began..." And then the camera pans to show the original iconic sets from the classic Universal films. Affectionate Parody is a massive understatement.
Frederick gets some Fridge Awesome, if you accept the deleted will scene as canon. Baron Beaufort von Frankenstein's will was recorded when the Baron was 83 years old, and was instructed to be played for his beneficiaries on his 100th birthday, which is when the inheritances will finally be assigned. This is a difference of 17 years. The record notes that at the time of recording, Frederick is all of ten years old. In order to get the Baron's inheritance, he must not only become a medical doctor, but an eminent voice in that field, which the Executor notes that he has, by virtue of being the fifth leading voice of expertise in the field of brain surgery. An impressive feat for someone who can only be 27 years old, a point when most doctors are only a few years out of medical school.