How Kevin Directs: At the 'Main Menu' on disc 1 go to the last page of 'Scene Selections' and press 3 twice. (You may have to press 'Enter' after each 3) and view 'How Jay Thinks Kevin Directs'. At the 'Main Menu' of the second disc go to the last page of 'Deleted Scenes'. Press 2 and then 4 (You may may have to press 'Enter' after each number) and view 'How Kevin Directs'.
Hidden Trailer: At the 'Main Menu' press the 'Right' arrow key on your remote control to highlight the heart around Cool Jesus. Select it and view the trailer for 'Good Will Hunting'.
Hidden Commercial: When you are viewing the 2nd disc and you are on the Buddy Christ, press the 'Up' arrow key on your remote control and this will highlight a small circle on the top left part of the screen. Press 'Enter' and you'll be able to view a commercial for Jay and Silent Bob's secret stash which is a store that sells Jay and Silent Bob memorabilia.