Instant favorite since Sneak Preview by Gratty
I saw Raiders with a buddy at a sneak preview showing, knowing only what we saw in the black & white, text-only ads (remember newspapers?): "From the creators of Jaws and Star Wars come a new action adventure hero," perhaps not quoted exactly, but more than enough to get us in back then.
An instant favorite from the first shadowy glimpses of Our Hero till he steps into the light and takes on the Nazis - cooking from one moment to the next, great visual storytelling from Spielberg, excellent characters, humor and action (THE TRUCK CHASE) combine to make perfection.
Play the Raiders March in your head, if it isn't already going.