- Awesome Music: For all its faults, the film does at least have a nice score courtesy of brothers Guido and Maurizio de Angelis (credited under their Nom De Plume "Oliver Onions"). Here's a sample.
- Hilarious in Hindsight: The idea of parasitic alien invaders disguising themselves as rocks would later be revisited in Apollo 18.
- Retroactive Recognition: Cliff is played by a young Michele Soavi, who would later rise to fame as a director of horror films including StageFright -Aquarius-, The Church, and Cemetery Man.
YMMV / Alien 2: On Earth