In the beginning of "The Big Cheese" Dexter's computer lists Dexter's plans for the day and there is a sixth entry of "Solve energy crisis". The list is then shown four more times as Dexter progressively moves down the list, completing the list, but in each of this times the "Solve energy crisis" entry is missing, having only five entries. Later Dexter's mom calls him to bed, and the list is shown again with different entries for 3, 4 and 5: Fix hubble, Split quark, and Name the galaxy.
"Miniaturization" is spelled incorrectly as "miniturization".
In "The Big Cheese", while the french learning course that Dexter used to "learn" French as well as his French teacher that gave him an A+ state that "cheese omelette" is translated as "omelette du fromage" in French, in reality it is incorrect. The correct translation is "omelette au fromage".
After the "Times' Man of the Year" interview in "The Big Cheese", when the TV chopper is outside Dexter's house along with all of his fans there is a ribbon above the door that incorrectly says "Omelet du fromage" instead of "Omelette du fromage".