Matte paintings from the original STAR WARS trilogy.
Chris Evans (not that one), Michael Pangrazio, Frank Ordaz, Harrison Ellenshaw, and Ralph McQuarrie all made mattes for the films, which, despite their outlandish appearance, are so convincing I didn’t realize for the longest time they are illusions. And yet, often enough, when I see a CG background I can tell.
Early CGI in STAR TREK films. The “rolling fire” Genesis effect and the Reliant’s targeting computer (II), the dogfight game that’s glimpsed in III (spot the red and green planes), and the dreamlike time warp sequence in IV.
The latter was storyboarded by Ralph McQuarrie, some examples below:
For this shot in Frozen 2, two separate simulations were run by the Effects team for the waves and the water lapping up on the beach. These were composites together along with a procedurally generated ocean surface that went all the way to the horizon.