* ActorAllusion / CastingGag: Creator/JamesEarlJones as Mr. Mertle, since he'd also starred in ''Film/FieldOfDreams'', another iconic baseball movie.
* AllThereInTheManual: The script reveals that the treehouse the gang hangs out in belongs to Timmy and Tommy (which leads to some FridgeBrilliance since it's established they grow up to be successful architects after inventing mini-malls).
** Tommy is never explicitly called by his nickname "Repeat" in the movie, but you see it in the end credits.
* CaliforniaDoubling: Inversion. Despite takin place in 1960s Los Angeles, the film was shot in Salt Lake City, Utah.
* PlayingAgainstType: A light-hearted meta-example; Smalls' stepfather is a Yankees fan, while Denis Leary, who plays him, is a long-time Red Sox fan.
** His acerbic stand-up aside, Leary is also known for playing morally ambiguous anti-heroes in most of his film roles. Here, he plays a calm (if slightly awkward) family man.
* RealLifeRelative: The actor who played the elder Benny is Pablo Vitar, brother of Mike Vitar, who played the young Benny.
* WhatCouldHaveBeen: David Mickey Evans wanted to have more sequels for the movie, each taking place in the subsequent decade (one in the '80s, one in the '90s, and so on).