Good thread, MP. Here are some of mine based on the first 2 along with SR, since part 3 & 4 were too horrible for me to list. Not to mention they were too bad, that I don't remeber many of it anyway.
Superman: The Movie
Jor-El telling Superman about what happend to Krypton along with seeing Superman in his suit for the first time & he fly toward the camera. Beauitful scene there.
Superman losing it after finding Lois dead & he place her on the ground. You barely see Supes lose it like this & Reeve's performance was brilliant in that.
Ripping the shirt, showing the iconic "S" along with the Williams's music playing. 'Nuff Said.
The ending with Supes flying out of Earth & giving that smile. Can't go wrong with that.
Superman II
Superman floating in front of the window, demanding to meet Zod outside. Love that one.
Superman crushing Zod's hand, fooling him into thinking he lost his powers. And the iconic William's theme kick in. That one always give me goosebumps whenever I watch that scene.
Superman Returns
The beginning with the theme & the names showing. It feel like being a kid again watching what you seen before in the original films.
Superman saving the plane & landing it on the baseball stadium. While it does seem cheesy where he land it on, but it was heroic what he did.
Superman raising above the sun to regain his powers & using all of his will to save Metropolis from New Krypton.
The speech Supes gave to Jason at the end. Touching scene there & brilliant performance by Routh.