8. Monster a Go-Go (1965)
> IMDb average rating: 2.2/10 (11,370 votes)
> Rotten Tomatoes audience score: 5% (715 votes)
> Starring: Philip Morton, June Travis, George Perry, Lois Brooks
A missing astronaut is turned into a radioactive monster. Or is he an alien impersonating the astronaut? And how did he end up in a Chicago sewer? The movie doesn’t answer any of those questions, which is probably at least partly why it bombed.
7. Flesh Feast (1970)
> IMDb average rating: 2.6/10 (699 votes)
> Rotten Tomatoes audience score: 0% (312 votes)
> Starring: Veronica Lake, Phil Philbin, Doug Foster, Harry Kerwin
In one-time glamorous movie star Veronica Lake’s final screen appearance, she plays a scientist developing maggots that devour human flesh. Her ultimate goal is to create a clone of Adolf Hitler so she can kill him. A sad ending for one of the screen’s most beautiful sirens.
6. Foodfight! (2012)
> IMDb average rating: 1.6/10 (10,438 votes)
> Rotten Tomatoes audience score: 10% (2,200 votes)
> Starring: Hilary Duff, Haylie Duff, Charlie Sheen, Eva Longoria
A rare computer-generated animated film on the worst list, “Foodfight!” follows the exploits of a cereal brand mascot and his followers known as “Ikes” as they combat an evil “Brand X” that wants to take over their supermarket. In the end, the good guys win and Brand X is defeated in a movie that’s a boon to product placement.
5. Moscow Heat (2004)
> IMDb average rating: 2.4/10 (2,284 votes)
> Rotten Tomatoes audience score: 0% (1,219 votes)
> Starring: Michael York, Alexander Nevsky, Richard Tyson, Robert Madrid
The plot of this movie sounds interesting: a retired diplomat avenging the death of his son and a Los Angeles detective follow a killer to Moscow, where they become enmeshed in the Russian underworld. Unfortunately, the movie didn’t live up to its promising premise.
4. King Dinosaur (1955)
> IMDb average rating: 2.1/10 (1,435 votes)
> Rotten Tomatoes audience score: 3% (378 votes)
> Starring: William Bryant, Wanda Curtis, Douglas Henderson, Patti Gallagher
Four scientists travel to a planet inhabited by giant insects and prehistoric mammals. While there, they encounter King Dinosaur, an iguana who stands on his hind legs. In the end, the planet is blown up in a nuclear explosion — a common plot device in many 1950s era films.