You know, I was just watching M again over the holiday (it's on Sundance channel now) and I realized that Suit and Glasses was just the sort of role that Peter Lorre would have been cast in. I can just picture him in the whole outfit, suit, glasses, and all. Now I'll never look at Suit and Glasses in quite the same way again ...
(BTW, it's amazing how topical M still is ... sad, too ...)