Performances in Hitchcock films that I find amazing:
James Mason, Cary Grant, Eva Marie Saint, Martin Landau, Jessie Royce Landis - North by Northwest
Leo G. Carroll - Spellbound
Joseph Cotton, Theresa Wright, Henry Travers, Hume Cronyn, and especially Patricia Collinge - Shadow of a Doubt
Robert Walker, Patricia Hitchcock - Strangers on a Train
Anthony Perkins, Janet Leigh - Psycho
James Stewart, Grace Kelly, Thelma Ritter - Rear Window
James Stewart, Kim Novak, Barbara Bel Geddes - Vertigo
James Stewart, Doris Day - The Man Who Knew Too Much
Roscoe Lee Browne, Karin Dor - Topaz
Wolfgang Kieling - Torn Curtain
Marlene Dietrich - Stage Fright
Henry Fonda, Vera Miles - The Wrong Man
Nova Pilbeam - Young and Innocent
Cary Grant, Ingrid Bergman, Claude Rains - Notorious