Films that feature pipe smoking

I love old movies (and by "old" I mean 1930s-1950s), and a couple stand out to me for the way they really highlight pipe smoking. Of course, the Basil Rathbone Sherlock Holmes series is an obvious choice. But there are a couple of others I thought folks here might appreciate.
"Crossfire" is a social-commentary crime-drama featuring Robert Young (later Dr. Marcus Welby) as an *avid* pipe-smoking detective. I think he's puffing in every single scene, and he keeps a rack of pipes on his office desk. It's also a very good movie -- a bit noir-ish -- about anti-Semitism in the 1940s.
"The Stranger," a classic thriller featuring Orson Welles and Edward G. Robinson as the pipe-smoking spy hunter who is on his trail. (Curious how so many of the pipe smokers on film are detectives/cops.)
I'd love to hear about any others that put pipe smoking front and center (beyond just having pipe-smoking characters).
Bob

cacooper:
"Mr. Blandings"! Of course! I love that movie too.
My one frustration is that the directors almost never make it easy to see what brand of pipe is being smoked. (Although I'm pretty sure that Cary Grant must be smoking a Dunhill in "Blandings.") Don't they know how important that is?
Bob