Indiana Jones

1. well I figured the most probable reason as to why they named it the last crusade is because:

A. Indiana Indeed finds the 'physical grail' rather then the metaphorical one we deal with in literature.

B. It's lost at the end of the film, falling into the deep chasm because of the Grail crossing the seal.

As a whole though, it implies that we, as human's, are finally able to take one last crusade to find what we want and what we are. The last one, no more afterwords.

2. As a note, wasn't it George Lucas and another man wrote the story for this one, not Spielberg? But the question is still valid. I think starting with young Indie gives us a parallel between Perss and himself. Although Indie is obviously much smarter and less Naive then Perss, he still is not able to think things through completely to the end. And on his crusade, he learns how to counter this.