C. Thomas Howell and Judd Nelson also appeared together in Far Out Man in 1990
"The Day the Earth Stopped" appears to be an homage to "The Day the Earth Stood Still". The two films parallel each other not only in title but in basic story, with the mecha-like Monoliths taking the place of Gort.
Thunder McQuaid plays a character named Lt. Tuck Pendelton. In Viaje insólito (1987), Dennis Quaid played Lt. Tuck Pendleton.
Due to the similarities with El día que la tierra se detuvo (2008), 20th Century Fox is suing The Asylum over the release of The Day the Earth Stopped.