Reasons I watched this movie: I like the story. It is part of my Baskerville movie marathon.
Jeremy Brett plays Sherlock Holmes in a number of stories. It’s a whole series with most of the episodes about an hour long and a few full movie length. One of them is The Hound of the Baskervilles.
This version sticks closer to the book in many areas (for example there is no loud and obnoxious Lyons, Dr. Mortimer is of a more suitable age etc.), but then again it gives away the culprit at the very beginning. Whereas in the Ian Richardson version you see him but don’t necessarily recognize him as Stapleton (I assume you have read the book and don’t mind that spoiler), here you see him clearly from the start. I find that odd. Where is the mystery? True we don’t know the motive of the murderer, but we know who he is! What sort of detective story is it when the audience knows who the killer is from the start? That might be ok for a Lieutenant Columbo, but not for a Sherlock Holmes.
As for Holmes: I think that Jeremy Brett might be the better Holmes as far as his character is described in the book. He plays Holmes as eccentric and moody, sometimes overly excited, sometimes quiet, sometimes full of action and then again not. But exactly that bipolar behaviour got on my nerves, I very much prefer Ian Richardson who plays the part a bit toned down.