Fun for the Director
From the disc's [Main Menu], go to the [Production Workshop] and then select the [Visual Effects] menu entry. Once you get to that submenu, highlight the [Progress Reports] menu entry and then press the [Right] arrow key on your remote control, followed by the [Up] arrow key. This will highlight a vampire glyph in the upper right hand corner of the screen. Press [Enter] now and you will see director Guillermo Del Toro having some fun with an adult toy.
On the 2nd disc, press [Left] on the remote and it will highlight a New Line cinema icon. Select it to view the dvd's special thanks.