Sivvy

I'd say "Annie," but I was three years old, and the 'falling in love' bit would only have applied to Tim Curry.

I guess I'd have to say "The Dark Crystal."  I was also three years old when I first saw that.  Not only did I fall in love with movies and the genius who was Jim Henson, I also realized the power of voiceover acting because the late, great Barry Dennen's vocal performance as the Skeksis Chamberlain still rattles me to this day. 

(Three years old = true stories; they're two of my many memories vying for the title of 'oldest.')