Thanks. Yes, I've seen both of those. In fact, the 1966 one was the first Blithe Spirit I ever saw. That one used to be on youtube, and I watched it again there a few years ago. Oddly, I remember very little about it now. The 1956 one is mostly quite good, even though it caused Coward to say (or write) of Colbert something like, "I'd wring her neck if she had one."