Animatrix Final Flight of the Osiris
I can barely believe that this film is now over 20 years old... This was the first VFX Supervision credit I got. It is part of an omnibus of short films, known as the Animatrix. As you can probably guess, this film played a significant part in the Matrix movie series, filling the in-between details between movies one and two. Even the way the sentinels stab people in this short ended up being adopted by the Wachoskis for the feature films...