ET : 1982 - I think ET is the movie I have see most..I saw it with my Mom at a movie theater for the first time..and then, went back to the theater to see it again with my Dad, my sister and Mom...and then, my family bought VHS(!) and watched it again and again and again... :-) I love the attraction in Universal Studio, too.
Also on these boards
Titanic : 1997 - this might be the movie I have see the 2nd most...I went to movie theater several times to see it, then, I bought VHS (still VHS at that time) and watched the video again and again and again... I am excited that this will come in 3D in April.... must see ...