The best of the Indy films
No doubt about it.
Raiders is a little overrated . . . Temple is a little underrated . . . but Last Crusade is the best.
It's got Nazis, the Holy Grail, "No ticket!", ancient knights, the Brotherhood of the Cruciform Sword, and Sean Connery!
I enjoy the whole series, but this is the one that I have returned to over and over throughout the years.