This is a classic example of a film made with the best of intentions, where most of the people involved didn't quite have a handle on the material and wound up producing something fairly inoffensive but forgettable... EXCEPT... somehow there are shining moments.
I've seen a lot of movies and it is pretty hard to impress me; but the sequence near the end of the film where Heathcliff goes down to Cathy's grave, later to be led on up the hill by her ghost, is simply one of the most haunting fleeting moments of cinema I have ever seen. In ANY film (and I have seen very many of the greats). Yes, this was just a lowly little teen-oriented American International Picture, directed by some studio stalwart, starring some inexperienced actors who were given a not very challenging screenplay that wasn't all that true to the source material. But this brief sequence just rises above all that -- simply and brilliantly directed, unforgettably scored (by Michel Legrand), fearlessly acted by a very young Timothy Dalton.
I don't know if I can recommend the movie based just on that, flawed as the film is, but I couldn't stop thinking about that scene for days, how close it got to the human condition on a visceral yet poetic level. It's just one of those things about moments of movie magic. You never know where it will strike, even in movies that don't rank with the best. I can't say I thought this version of Wuthering Heights was the best, but I can certainly understand why many people have remembered it fondly.
