Auch Marsmenschen haben Hunger

Top of the Food Chain is a 1999 Canadian comedy-horror film directed by John Paizs and starring Campbell Scott, Fiona Loewi, and Tom Everett Scott. A parody of alien invasion movies of the 1950s, it was released on video in the United States under the title Invasion!

The film revolves around a vacationing atomic scientist who encounters mysterious carnivorous beings disguised as traveling salesmen who are feeding on the eccentric population of the small isolated town of Exceptional Vista.[1]