Baseball: Field of Dreams, The Natural, For Love of the Game.
Golf: Caddyshack, Happy Gilmore, Tin Cup,
Soccer: Victory! (which puts it in the top of the list all on it's own)
Basketball: White Men Can't Jump.
Football: Water Boy, Brians Song, Necessary Roughness.
Hockey: Miracle
Figure Skating: Blades of Glory
Track: Chariots of Fire