If you're looking to learn about some very bad science fiction movies, then these eight sci-fi flicks just may fit the bill that you are seeking. Just like with any other genre, science fiction has seen its own fair share of garbage -- Everything from the "Alien vs. Predator" movies, "Star Trek: Nemesis," to even the "Star Wars" prequels. It's easy to mess up a science fiction movie if all you care about is making a quick buck. Let's take a walk down the science fiction cinema hall of shame.

  1. The "Alien vs. Predator" Series. What could possibly be worse than the "Alien vs. Predator" series? Having only spawned two films ("Alien vs. Predator" and "Aliens vs. Predator: Requiem"), the "AVP" movies are probably the worst science fiction movies ever made. Granted, the second film is even worse than the first, however, both are abominations to the "Predator" and "Alien" franchises.

  2. The "Star Wars" Prequel Trilogy. Following an anticipated wait of almost twenty years since the original "Star Wars" trilogy ended, the prequel trilogy began unleashing on the screen with "The Phantom Menace," "Attack of the Clones," and "Revenge of the Sith," three films which caused more harm to the franchise than good.

  3. "Star Trek: Nemesis." This is not only one of the biggest bad science fiction movies ever made, it is quite possibly the worst "Star Trek" movie ever. This is the pits of the "Star Trek" franchise, their all-time low. "Star Trek: Nemesis" is overly dark, violent, depressing and flawed. Not to mention, it borrows heavily from "Star Trek II: The Wrath of Khan."

  4. "Predators." After a long twenty year wait, the follow-up to "Predator" and "Predator 2" is nothing more than a mere rip-off of the first "Predator," complete with copied scenes, characters, and action bits. They even went as far as to include yet another jungle setting. This is supposed to take place on an alien planet and the jungle doesn't look alien enough.

  5. "Superman IV: The Quest for Peace." After the horror that was "Superman III," they decided to take the series one horrible step even further with "Superman IV: The Quest for Peace." The entire original cast is back, yes, but this is not on the same level as the first two movies. And worst of all, we have a Cold War theme that dominates way too much of the plot.

  6. "RoboCop 3." Yet another third entry in a popular franchise that marked the downfall of the entire series. "RoboCop 3" is where RoboCop meets Mickey Mouse, making it among one of the worst science fiction movies ever made. We've got a different actor, stupid low-grade villains, and an unnecessary PG-13 rating.

  7. "The Core." When it comes down to bad science fiction movies, we used to think "Armageddon" was among the cream of the crop, but then we watched "The Core." "Armageddon" comes off as a big, dumb, harmless fun compared to "The Core" which depicts a group of 'experts' traveling down to the center of the Earth to drop a nuke in order to keep the planet spinning. Need we say more?

  8. "Alien: Resurrection." Where did this series go wrong? Was it this or "Alien 3"? "Alien: Resurrection" makes "Alien 3" look like "The Godfather," let's put it that way. In this bad science fiction movie, the series exchanges all its goods for cheap black humor, dumbed-down characters, a horrid script, and an embarrassing new alien.