The Private Life of Sherlock Holmes
Directed by Billy Wilder??? with no actors I recognized other than Chistopher Lee. Not bad though.
Certainly one of the worst of the great Billy Wilder's films. Especially bad because of the attempt to throw a question in there about the relationship between Holmes and Watson. There are a few other recognizable actors in the movie. Particularly notable is Clive Revill who played the guest murderer in the last Columbo episode from its original run.
As for old men and their pronouncements about art, mine is just taking Sturgeon's law one step more.