I grew up watching the 2000 re-make movie of the same name and watched it so many times, I thought it was so funny, clever and original (I didn't know it was a re-make at the time). Just watched the Peter Cook film last night on tv and can't believe how wrong I was! The 1967 version is a classic, the wit and the charm of Peter Cook blew me away! I wish I had seen this film as a kid, the nuns on the trampolines would have had me laughing all through my school years. In comparison this ranks the new Bedazzled film to the bottom of the list and the old one to the top. I can't wait to buy it on DVD.
The original is much more true to itself, homogeneous and the devil has much a wider scope of actions. The movie has deeper jokes and a critical social undertones, in a comical way without trying to establish certain morals. Margeret gets a real character - Allison in the 2000 version hardly has one, she hardly appears outside the fantasy episodes.
What I missed a bit in the original: a better rythm or a stronger climax. I like the wish episodes, I like the multiple subplots with Margeret or the sins, the multiple endings - the god ending and the back to shitty normal ending. But alltogether the flow of the movie could be better especially towards the end.
The remake did have some clever ideas, as you mention, and some nice twists and updates of the original ideas.
But it wasn't funny! Hardly a laugh in the whole thing! A comedy that's not funny isn't worth the pixels it takes to broadcast it, no matter how many clever ideas it includes.