What is your favorite movie? why?

No matter how many movies I see, I return over and over to this one - 'Der Himmel uber Berlin' (Wings of Desire).  This movie resonates with me in a way that no other one does.  It definately matters that I speak German fluently.  German is certainly not known as a 'beautiful' language (for good reason!), but the ode (Song Of Childhood or Lied Vom Kindsein) written by Peter Handke is just marvelous.