Ouch, that list could be very long for me.
-Any of the original Star Wars trilogy.
-Conan the Barbarian.
-Any bit of The Lord of the Rings trilogy. And like with Star Wars, it does not matter if the movie has started already, I’d happily watch on from any point.
-Enemy at the Gates, Saving Private Ryan.
-Shawshank Redemption.
-Braveheart, Gladiator.
-The Princess Bride, Shrek or Shrek 2.
-A fair few Disney movies, namely Jungle Book, Brave, Moana, Peter Pan, Mulan, Lion King.
-The Matrix, Blade Runner (although being my favourite movies of all time, I tend to make them more of an special event when watching them).
-The Last Crusade, and to a lesser degree, Raiders of the Lost Ark.
-Highlander, Willow (which I haven’t seen for ages, actually), and plenty of other 80s adventure movies, like Golden Boy, Big Trouble in Little China, Beverly Hills Cop.
-And strangely, American Gigolo. I love that movie style.
I am pretty sure there are plenty more, but I sort of went by genre, and that’s what I can remember now.
EDIT:
I can’t believe I did not include any comedy: Hot Fuzz, Shaun of the Dead, Life of Brian, Top Secret, Zoolander, Wayne’s World, and any of the Naked Gun or Austin Powers movies with my OH, she loves those silly ones, and I love laughing along with her.