What a question! This is so hard to chose just one - I have tried to watch movies and see what others liked but just didn't understand them or they didn't draw me in - I guess that is how I measure music / play / book / movie - How well I am transported to another place another time another feeling? And while on this trip - what did I learn about myself.

Casablanca good pick - for me it was the tension and how that "don't play it again Sam" and the "of all the gin joints in the world you had to walk into mine"

Joan of Arc - near the end of the movie - she is in prison and at this point you wonder if is she a victim of a vivid imagination and all of her life reacting to the trauma beset upon her sister that she witnessed. - Or- The scene - She is having her final conversations with God - It took the Catholic Church 500 years to figure it out when she was made a saint.

I agree it's impossible, but Casablanca is one of the very best. In this we can agree.

To type Casablanca is pretty much a no brainer, right now it's #3 on the American Film Institute's top 100 films of all time list, url below, so I had to justify it somehow. And as you say Gramps, there are so many great lines and threads in the movie. Another one I liked is something like Rick saying to Ilsa, 'you wore blue, the Germans wore gray...' The movie is full of them.

So definitely we can agree. But there are so many movies, so much enjoyment and memories to be had. I know I couldn't do a top ten, maybe a personal top 100 is possible. Thank goodness for Netflix...

Oh yeah, the url for the AFI list.

http://en.wikipedia.org/wiki/AFI%27s_100_Years..._100_Movies_(10th_Anniversary_Edition)#The_List