Pascal (and specifically Borland's Turbo Pascal) is what started my transition from spaghetti code BASIC to something at least vaguely structured. All (mostly)

Pascal (and specifically Borland's Turbo Pascal) is what started my transition from spaghetti code BASIC to something at least vaguely structured. All (mostly) self-taught -- my high school didn't have any kind of programming classes -- but Pascal encouraged a structure much more than BASIC did, and helped me to realize the importance.