Bonus Featurettes
Enter the [Special Features] menu, and highlight the [Making of]. Press [Up] and you should have the eyes highlighted. Press [Enter], and you will be taken to a new menu where you can view some short featurettes about director John Carpenter, and stars Roddy Piper and Meg Foster.
Hidden Photo
If you press [Lef while one of the featurettes is highlighted, you can select Piper's sunglasses. This takes you to a photo of Carpenter and Piper, taken at the recording of the commentary.