I am unceasingly impressed by Curiosity's strength, precision, and stability.
Click to view attachment(thumbnails recently downloaded from Sol 1089)
One of the greatest demonstrations of this that I can think of is when it's checking a full rotation of its wheels, like these images from Sol 1046.
(Click for GIF)Click to view attachment + 3 other angles for MAHLI
and
(Click for GIF)Click to view attachment + 4 other angles for MASTCAM
If you didn't know any better, you'd probably assume it left the camera there while it rolled forward, pausing 5 times to capture these images, then moved to capture a different wheel and did 5 more frames from that angle, and so on. In reality, it only performed a single revolution. After each increment, it moved the camera into position to snap a single frame, then moved the camera to several other locations to capture a frame from those angles as well, taking between 15-25 seconds for the camera to move to the next position, capture a frame, and move on. For each frame, it was able to return to the exact same position it had been in earlier, enabling an animation to create the illusion that the camera never moved.
This gets even more impressive when you realize that it didn't return to the same position relative to the rover body or chassis, but rather relative to the hub of the wheel it was imaging (you can see the rockers moving while the target wheel stays fixed in the frame).