Mongoose, The Truth About Charlie was a remake of Charade, but rewritten so it was a bit different. It was not a big hit at the box office, but I really liked it. They paid tribute to Shoot the Piano Player, and Charles Aznavour sang in the movie. Charade was one of my favorite old movies, but I quite liked the updated version.
(I liked The Trouble With Harry too, very quirky)
Are you finding it tedious to answer so many questions? (You definitely make it seem effortless, and everything you've posted has been a joy to read!)