This prologue scene in Treasure Planet where Jim while solar surfing, cuts the engine and plummets always floors me because of how accurately it treats the physics of a free fall.
The sheer sense of weight, speed, and genuine air resistance they managed to capture. The violent camera shake perfectly mimicking how you'd experience it in a real dive.
In SLC Punk! (1998), Matthew Lillard’s character Stevo was originally meant to have bleached blonde hair, but the peroxide badly burned his scalp, so they dyed it blue to cover the damage, and Lillard later called it his favorite film of his career.