All movies starring Walter Pidgeon and reviewed on the Ace Black Movie Blog are linked below:
Dark Command (1940)
How Green Was My Valley (1941)
Mrs. Miniver (1942)
Madame Curie (1943)
Mrs. Parkington (1944)
Quo Vadis (1951, uncredited narrator)
The Bad And The Beautiful (1952)
Executive Suite (1954)
The Last Time I Saw Paris (1954)
Forbidden Planet (1956)
The Rack (1956)
Funny Girl (1968)
Two-Minute Warning (1976)
The Movie Star Index is here.