The director's cut for Blade Runner is a massive improvement on the theatrical version because it removes the narration the studio forced in. A lot of director's cuts include a few scenes that make a movie work when they were cut or changed to meet some silly studio meddling.

I'd argue that James Cameron's "The Abyss" director's cut is superior to the theatrical. The extra 25min introduces some extra plot details in the climax that really flesh out the ending

What about watching a directors cut unknowingly and loving it?

The theatrical cut of Dark City assumes the audience is an idiot and spoils the movie's plot twist with an unnecessary opening narration.

/end of thread!!!