Fun with credits: Wilfredo Roldan later had a role in Mathew Barney's "River of Fundament" (if IMDb is correct).
I wish I could have been with an audience on this movie's premiere just to see the reaction when the first head exploded. I can only imagine the bedlam that must have erupted.
Strong script, tautly directed. Patrick McGoohan is a joy to watch, as usual (I'm a huge fan of "The Prisoner"). Stephen Lack is a stiff, but sometimes he makes the lack of affect work for him. Other times, he just looks extremely constipated. Painfully, perhaps lethally constipated, especially while he's scanning.
I first saw this as a teenager in the late '70s on a reissue, in a theater with a very large screen (though I can't honestly remember if it was 35MM or 70MM). I had already read the book (and even the "Making of 2001" book), and I loved it. Can't say I always "got" it, but I knew it was an overwhelming work of art.
I've seen it on video numerous times since then, letterboxed but, c'mon, you need…