This movie will create a save file for Spider-Man (GC) to enable playing as Green Goblin.
You will need a formatted memory card and no Spider-Man save files on it.
It starts by starting the game on Hero difficulty, then immediately quitting out of the first level. It then goes to specials and puts in the "IMIARMAS" cheat to unlock all levels ("Sam Raimi" backwards, the director of the movie this game is based on). This unlocks all the levels. Then the TAS starts the cutscene that plays when you complete the game - and since the difficulty was set to Hero, this unlocks Green Goblin. The TAS goes to the secret store and enables Green Goblin, then quits to the main menu and saves the game.