Some were actually tóó clever for me, needed more studying to decipher them. (I guess if I was into movies I would have recognized some faster). It is definitely one to reread afterwards to appreciate it fully :)
I've definitely heard of all of them and I've seen all but 50 Shades and Crazy Rich Asians. A bunch of these I've seen many times. Groundhog Day, The Princess Bride, and Star Wars I've probably seen at least 30-40x each. Iron Man, Braveheart, the 6th Sense, My Cousin Vinny, and Toy Story have to be close to those numbers. The only movie I think I've seen more than The Princess Bride is the 1986 The Transformers.