Trailers:
Load disc 1 and when the Warner Logo appears you will be able to select Titles 3-9 and along with a warning trailers about copying.

Shortcut:
Load disc 2 and go on either Dragon Arena, Lake or Maze and go on the challenge. At the map screen click on the cup which lets you do all three in a row and if you manage to complete them all in one go without getting hit once you will get a shortcut icon to the graveyard challenge.