Cave Man and George Melies' Le Voyage Dans La Lune.
Seriously though, I don't think I can fully quote a movie, but I do know by heart many chunks of the scripts of Jewel of the Nile, the Indiana Jones Trilogy, Dude Where's My Car, The Blues Brothers and Disney's Alice In Wonderland. The funny part about the last one was that I didn't really watch it that many times when I was a kid, but my little brother watched it almost daily when he was like 3, so the quotes stuck to me then lol; we were usually in the living room, I played GB/GBA while he watched it. I used to know Home Alone, The Mask, Lion King and Ace Ventura 2 almost by heart when I was like 6, but I forgot most of what I memorized.