If you go to http://usimdb.com and look up The Magic Christian, the average rating it gets from users is 5.5 out of 10. That makes it sound like a mediocre movie, but upon reading the reviews, one will discover that it got a 5 primarily because the reviewers either loved the movie or hated it. This comment by Cliff Sloane of Seattle, WA sums it up best:

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Reading the other comments convinces me that we have become the society this film satirizes. No current filmmaker comes close to this level of insight or provocative innovation. Maybe I'm just being nostalgic for a most irreverent time, but nothing going on today is even close to being as subversive as this. The film is a series of unconnected sketches, so don't look for plot.

The point is to set up a series of darkly funny attacks on British bourgeois society, so don't look for good acting (except of course for Peter Sellers). Instead, look for one savage critique after another, with biting dialog and absurd situations. I loved it!

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In other words, you probably have to have a really twisted sense of humor to enjoy it. I have not yet see this movie, BUT: Pre-Monty Python actors? Christopher Lee as The Ship's Vampire? Yul Brynner in drag? Created by Terry Southern, the same guy who brought us Dr. Strangelove? Everyone who watches it either loves it or hates it? I'm there!