In all honesty, this probably deserves to be a lot lower down the list, but given that nobody expected a sequel to A Haunted House to be any good, this is where it'll place. The first movie in this "franchise" wasn't particularly amusing in any capacity; a sort of poor man's Scary Movie, back when Scary Movie actually had some weight to it. Still, even those who thought of A Haunted House as low-end schlock could not have anticipated the sheer awfulness of this terrible follow-up. Seriously: WTF? If you were tasked with designing a motion picture intended for the stupidest people on Earth, A Haunted House 2 would be the perfect contender. Essentially a collection of Godawful skits featuring Marlon Wayans, held together with a loose narrative, A Haunted House 2 remains so appallingly unfunny from start to finish that it verges on the point of parody: it's impossible to watch this without thinking that the filmmakers had to have designed it as some sort of in-joke. Somehow, they didn't.
Sam Hill is an ardent cinephile and has been writing about film professionally since 2008. He harbours a particular fondness for western and sci-fi movies.