My DVD movie collection is topping out at (today anyway) at 615 movies. Out of the 615 I own, 550 are mine. The rest are other family members. Out of the 550 that are mine, each and everyone is special. I own them because I never get tired of watching all of them. With that said, if I had to pick here are my top 3:

1936, Petrified Forest: Humphrey Bogart (Duke Mantee) , Bette Davis (Gabby Maple), Charlie Grapewine (Gramps), Leslie Howard (Alan Squire)

1964, Goldfinger: Sean Connery (007), Gert Frobe (Auric Goldfinger), Honor Blackman (Pussy Galore), Harold Sakata (Odd Job)
This is the first 007 movie where Q-Branch and its gadgets appear.
Great Line:
007: Goldfinger, do you expect me to talk
Goldfinger: No Mr. Bond, I expect you to die!
How could anyone not love a movie with a beautiful henchwoman named "Pussy Galore"!

1931, Frankenstein: Boris Karloff (The Monster), Colin Clive (Henry Frankenstein), Dwight Frye (Fritz)
Great Line:
Henry Frankenstein: Oh, in the name of God! Now I know what it feels like to be God!