Continuity mistake: Following Rodney's step from the escalator on the red pedestal he is being scooped into one half of a wire-frame globe/ball. Two halves now (the other one has Fender in it) form an intact globe. A safety bar with a 'wooden' middle bit (like those on rollercoasters) suddenly appears. After their journey, when the ball splits back into two halves, the safety bar, which previously had mysteriously appeared, now has disappeared.
Continuity mistake: When Wonderbot shows his skills in the kitchen, the number of plates he handles changes from shot to shot. First he adds 6 to the 3 plates already in Rodney's father. After cleaning only 6 plates come out. Wonderbot takes them, but the next shot shows him with 8 plates. Then he puts 5 dirty plates in the dishwasher; after cleaning these are suddenly 12 plates.
Trivia: A little nod to another Blue Sky Studios Production, "Ice Age". When Rodney is looking around Robot city, he comes across a red robot that plays hip-hop. As Rodney walks away nervously ("Uh, n-n-never mind"), pause the frame just before the shot changes and you'll see (on the left) a yellow, mechanical Sid. Sid is the sloth (and the main character) from "Ice Age".