I've always LIKED March's Jekyll, even though he's supposed to be so much harder to sit through than his Hyde.
And as clever as it is, I always have a little problem with the Hyde make-up. I'm not making up this coincidence, but the hair makes me think of Tony Roberts, and the mouth makes me think of Tony Robbins! (Maybe not the condition of the teeth, but the size.) I'm not knocking either one's appearance, but neither one is someone you want to be reminded of when you see MR. HYDE.