Remember "Hamlet"?
Kenneth Branagh cast Heston as the Player King in his 1996 masterpiece. Heston brought power and grace to his minor supporting role, the "lead role" in the play within the play. I do remember him in his blockbuster parts, but his generosity to other actors and his dedication to the integrity of the script was on full display as the Player King. I forgot he was Charleton Heston.