Each character's standard progression in the Sphere Grid is reminiscent of at least one Job Class from previous Final Fantasy games. Tidus is a Fighter-Time Mage combination, Yuna is a typical White Mage/Summoner, Lulu is a pure Black Mage, Wakka is an odd take on an Archer-Green Magenote given his status-inducing attacks fusion, Auron is a FFT-style Knight, Kimahri is a cross between a Dragoon, a Blue Mage and a Red Mage, and Rikku is a wonderful blend between a Thief and a Chemist.
Beam Me Up, Scotty!: The infamous NPC kid in Kilika says, "I'm gonna be a blitzball when I grow up!" It is very frequently misquoted as "I want to be a blitzball when I grow up!"
No Export for You: The US didn't get the International version initially, only the PAL regions and Japan. This was not rectified for thirteen years, until the HD release, which has the International version's content.