A Nightmare on Elm Street 4: The Dream Master. I was too hard on it. I realize this after watching Freddy's Dead: The Final Nightmare (1991), which does more to tarnish Freddy Krueger's legacy than any dog piss could ever do.
Where do I even begin? In his first appearance of the movie, Freddy (Robert England) is flying on a broomstick and wearing a witch's cowl and hat. He looks at a doomed teen through a window and says, "I'll get you, my pretty, and your little soul, too!" Freddy might as well be Bugs Bunny.
The plot ... I don't care. I just don't care. It's not worth the effort summarizing. None of the characters are interesting, none of the acting is good, none of the special effects are especially imaginative (even Freddy's burn makeup looks half-assed), and almost none of the jokes are funny. I admit I did laugh when the stoner watches the anti-drug commercial with Johnny Depp and Freddy turns up to smash Johnny Depp in the face with a frying pan. The only reason it's funny is because that really is Johnny Depp; I'm amazed he turned up for a cameo.
We learn some more about Monsieur Krueger's backstory. As a kid, he was teased for being the bastard son of a hundred maniacs, enjoyed smashing gerbils with hammers, practiced self-mutiliation with a razor blade, and murdered his stepfather. Before he was caught, Freddy had a wife and young daughter. They lived in a nice little house with a nice green lawn and backyard fence, and then the wife had to go and ruin it by discovering her husband was a child killer. Spouses can be no intrusive.
Robert Englund deserved better.