Factual error: (Unsure of the exact episode): Kevin comes home from school to watch the liftoff of Apollo 13. Apollo 13 lifted off on a Saturday, April 11, 1970.

Continuity: In episode 37, "The St. Valentines Day Massacre", the writing on the card Kevin makes for Winnie changes from the time he makes it to when it's shown again at the end of the episode; he's shown printing it and writing just in one corner of the card, but when the card is shown again, the writing is in cursive and is spread down the side of the card.

Visible crew/equipment: In episode 26, "Wayne On Wheels", the reflection of a large light used to light the shot is visible in the car window as Wayne is driving away after dropping Kevin off at the mall.

Factual error: The gym at the "1972" championship game has a 3-point arc and a scoreboard that counts down the time in 1/10 second increments. The NBA did not implement the 3-point shot until the early 1980s and the 1/10 second timer until almost a decade after that.

Continuity: The items on Chuck's lunch tray - particularly the milk carton - keep moving around between shots as he's speaking to the pretty girl.