Hilarious. Surprisingly, the best Waugh adaptation I've seen. Zany, silly, odd, and quite lovely. A highly exaggerated satire of the funeral industry and for that reason, as a seething black comedy, it works supremely well. Fortunately, there are some good people who are trying to turn the tide regarding greedy charlatans, but we'll always have Joyboy.
I always thought this movie was funny and unhinged. Not wasteful, like the also funny and unhinged 1967 "Casino Royale" but with a great comic spirit. Milton Berle, Rod Steiger and Margaret Leighton are especially good. One jarring note: they have dubbed Barbara Nichols thereby stripping her of her essence.