that is pretty hard, cause there are many movies out there that really good. but i tel you what my first #1 movie was. Carlitos way! Why? Because it was the first movie that i saw in my life that had no happy end.....I was young
Call me crazy but Forest Gump has my vote. You've got action, romance, comedy and tear-jerker all rolled into one.
For me the best movie of all time would have to be Cast Away. I love everything about that movie, and Tom Hanks always blows me away with his incredible acting.