The moment when Kevin Costner's father's ghost comes walking into the diamond - and you realize what all this has really been about.
Ray having time-traveled back to 1972 tries to convince Doc Graham to come with him back to Iowa to fulfill his dream of getting a hit in a major league game. Graham, however, refuses to go:
Ray: Fifty years ago, for five minutes you came within... you... you came this close. It would kill some men to get so close to their dream and not touch it. God, they'd consider it a tragedy. Doc Graham: Son, if I'd only gotten to be a doctor for five minutes, now thatwould have been a tragedy.
Mann, trying to find out why The Voice sent him and Ray to find "Moonlight" Graham, interviews the residents of Chisholm who knew Doc, and they tell all these fantastic stories of a decent, warm, cheerful guy who took care of the city for over 50 years.
The scene when all the baseball players say goodbye to Moonlight Graham, after he steps over the threshold to save Karin's life.
Shoeless Joe: Hey, rookie!
(The elderly Moonlight looks over at Joe)
Shoeless Joe: ...you were good.
(Moonlight offers a wistful, bittersweet smile before stepping into the cornfield for the last time)
On a meta level, this movie is a Heartwarming love letter to baseball itself.