What I found fascinating was the PROLOGUE: "The Man Who Didn't Want to Paint." This would normally be an "extra" on any DVD (unfortunately, so far, no DVD of the feature has been released). It is here on the VHS tape, as part of the feature. It runs about 20 minutes, but one should not fast-forward through it. It is fascinating, and adds tremendoubly to the enjoyment of the main feature. In fact, movie channels sometimes run this as a featurette without running the full film. And that's just fine with me.
Also, one should see this film in the "Letterbox" format to get the true scope of what director Reed was trying to present. "Full Frame" or "pan and scan" versions add electronic edits where none existed in the original and can chop up a film unnecessarily.
True, this feature reads like a "Reader's Digest" version of the life of Michaelangelo; a sort of "highlights" of the man's life. It does heavily concentrate on the on-again, off-again relationship with Pope Julius II, and sllows Harrison do drop in his deliciously dead-pan one-liners.
Should a new version of Michaelangelo's life be filmed (perhaps as a miniseries)? Most definately. Should an actor who more resembled the artist be cast? Yes. But, remember that AGONY was filmed in the 1960s and star power was the order of the day. Heston was hot; so was Harrison (My Fair Lady). Mr. Heston, however, has left, in print, his impressions (not all of them flattering) of both Harrison and Mr. Reed in his DIARIES. Sometimes, they make more interesting entertainment than the movie, itself.