I've just seen The Last Remake of Beau Geste for the first time. If you go to that link there, and read the cast list, it tells you everything you need to know. It's exactly the movie you'd hope it'd be with that cast. I mean, Marty Feldman and Michael York as identical twins? It's genuinely wonderful. More's the pity that it's out of print in any medium. You have to get a used VHS copy to see it, which I have done. There was a time about 6 months ago when a used copy was going for upwards of $80. They are now down under $20, which is just peachy.