 A running gag involves eyeballs, which at one moment represent binary digits (the digit 1 resembles the letter I, a homophone of "eye", while the digit 0 is in the shape of a "ball") and at other times seem to be an allusion to The Residents ("Guyz in Eyeball Hats").Another is "U.S. Plus", an apparent multi-national conglomerate with intentionally vague commercials that hint at their all-encompassing presence ("We're U.S. Plus.We own the "idea"...of America!