J.R.R.T. : A Study of John Ronald Reuel Tolkien, 1892-1973 (1992)

J.R.R.T.: A Study of J.R.R. Tolkien is a 1992 documentary, narrated by Judi Dench, produced to celebrate the centenary of J.R.R. Tolkien's birth. It is sometimes called "J.R.R. Tolkien: A Portrait" and "J.R.R. Tolkien - An Authorized Film Portrait". It features archive footage and audio recordings of J.R.R. Tolkien, and interviews with three of his children Priscilla, John, and Christopher. It also includes interviews with Baillie Tolkien, Robert Murray, Queen Margrethe II of Denmark, Rayner Unwin, Tom Shippey, and Verlyn Flieger.

Unfortunately the movie J.R.R.T. : A Study of John Ronald Reuel Tolkien, 1892-1973 is not yet available on HBO Max.