The fascinating animations of Julian Antonisz are unique in both their visual appearance and technique. Antonisz (1941-1987) was a Polish animator who drew images directly onto film stock (either by painting or scratching), which is also known as the "non-camera" technique. I love the way his expressive, colorful drawings look as if they are pulsating when animated.
Antonisz is known for his mechanical innovations such as his "Antoniszograf fazujący," a machine that scratches images onto a set of frames. You can see a photo of the Antoniszograf fazujący here.