This list is in chronological order, by year, and alphabetical within that, not by release date.
*I forgot Real Steel and The Bourne Legacy, so I'll be making an updated version.*
The first movie that I saw in the theater was Barney's Great Adventure, and the last was The Rise of Skywalker.
The first time that I saw The Wizard of Oz was at a screening at our local opera house when I was a teenager. :) I was also fortunate enough to see Death Note II: The Last Name during a two-night theatrical event in October of 2008. (Granted, it was the English dub, but I didn't mind that very much back then.)