Cliff Secord: Jenny, prepare yourself for a shock: I'm the Rocketeer. Jenny: The Rocke-who? Cliff [frustrated]: Oh for crying out loud, haven't you read the papers? Jenny: No, I've been working all day.
One of the best parts happens near the climax. It's so cool watching the FBI AND gangsters working together. Even Eddie seems to realize this. Also counts as a Crowning Moment Of Awesome.
Related to the above: A gangster and a fed have taken cover behind the same car, and are gunning down nazis for all they're worth. Then, suddenly, they stop, look at each other, shrug, and go back to killing nazis.
Cliff's first flight after saving Malcolm at the airshow: he nearly falls to his death three times, flies through a clothesline, digs through a field, and finally skips across the surface of a creek to crash into a stop into the muddy bank. And after all that, he only has one thing to say to Peevy:
Cliff:(Panting) I like it!!
During the climax of the film, The Rocketeer is climbing along the top of a Nazi zeppelin when the resident Giant Mook Lothar confronts him, knocking Cliff's pistol out of his hand. Cliff takes one look at his gigantic opponent...and immediately dives for his weapon.
"Big Gopher!" And the guy next to that one was played by Tiny Ron aka Lothar.
"It wasn't lies, Jenny. It was acting!"
The Rocketeer, flying around inside the nightclub, in full How Do I Shot Web? mode. The sheer destruction is beautiful, in a way.