The art of the Hitchcock cameo

Ah, the wonders of Youtube! Here's a good guide to most of the best Hitchcock cameos - my favorites are his appearance in Lifeboat (that's him in the "Reducto" obesity ad) and his po-faced passenger next to Cary Grant in To Catch a Thief. The films in order are: The 39 Steps, The Birds, Strangers on a Train, Dial M for Murder, I Confess, Vertigo, The Wrong Man, To Catch a Thief, Mr. and Mrs. Smith, Marnie, Psycho, Lifeboat, Notorious, Stage Fright, Foreign Correspondent, and North by Northwest.