Hidden footage
Insert Disc 2. Advance to the second screen and select "Skynet Database". The answer for "Who Created Skynet?" is "3) Brewster." This grants you access to the database. All of the subjects in each section have a short hidden behind the scenes feature about them except for Kyle Reese, Sarah Connor, and T-1000: "Liquid Metal" Advanced Prototype. To access the hidden clips, play each subjects database file. When the file is playing, press [Right] (to highlight an icon that takes you back to the main database page), and press [Up] to highlight the photo. Press [Enter] to view the hidden footage.