I've bought a fair number of 4K movies over the past few months, and the last one I watched was The Matrix Revolutions. I've ordered a 4K set of the first six Mission: Impossible films, and I'm looking forward to seeing them all in the best video quality available.
I also have entered into the habit of watching movie reactions on YouTube. Its often both funny and refreshing, to see films I grew up with through the eyes of those who haven't had the same experience.