At first glance, most of the monitors you find in the back-rooms of Aperture are spewing absolute gibberish.
A closer look does reveal a lot of gibberish and corrupted text... alongside a recipe for cake, listing several baking ingredients of varying appropriateness including (but not limited to:)
Granulated sugar
Chocolate chips
Baking soda
Vanilla frosting
Fish-shaped ethylbenzene
Sediment-shaped sediment
Fish-shaped volatile organic compounds
These ingredients are also mentioned by GLaDOS' blue-eyed orb during her boss fight.
Guide listing help
Unlike normal walkthroughs, in Nice Game Hints you can select just the puzzle you want hints for. Here are listed the puzzles for "What's on the orange screens?" in Portal. The guide you choose only contains information about that puzzle, reducing possible spoilers for other puzzles.
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