When done right, the science fiction genre can be an escape for us to experience worlds and environments much, much different than our own.
However, science fiction can also be a host to myriad bad ideas, poorly executed passion projects, and ambitious misfires that live on in infamy. I've assembled 21 of these out-of-this-world sci-fi duds with the "can't look away" quality saved for the most laughably half-witted of the genre.