On the cameos: Hitchcock was in every one of his movies after the silent THE LODGER. I’m not sure what percentage that was, but it has to be higher than 75%, I’d guess.
I don’t have “a” favorite, but PSYCHO, NORTH BY NORTHWEST, REAR WINDOW, and THE BIRDS are right up there. FRENZY is uneven, but I enjoy it. I actually light FAMILY PLOT, as well, although it’s far from his best. And TROUBLE WITH HARRY is always fun. And the second MAN WHO KNEW TOO MUCH. And REBECCA. And…
BTW, I actually met Hitchcock back in 1966, and got to spend a few hours with him (me and a small group.) He was smaller than I expected, but that amazing wit was there. Most of the time, he gave his “standard” answers to questions, but I think I got him with the question: “If you could ask a question of Alfred Hitchcock, what would you ask?” He seem befuddled for a moment, then said, “I’d ask, where do you get such unusual views about sex? and the answer is, I don’t know.”