Character mistake: When Hoss takes Timmy for a horseback ride, after they both dismount by the lake, Hoss calls Timmy by his real name Johnny (Whitaker) and not Timmy.
The Odyssey of Flight 33 - S2-E18
Character mistake: The real speed that was reported was 3,000 knots. At one point, the plane encountered a bright flash, and violent shaking. The Captain surmised that they broke the sound barrier. 3,000 knots equates to over 3,000mph. The sound barrier (Mach 1) is about 767mph, and the captain would know that.
Dennis' Penny Collection - S2-E14
Character mistake: When Dennis sees Mr. Wilson park his car and put a penny in the parking meter, he asks, "Did you notice the date on it?" Mr. Wilson tells him, "It was 1492." (00:21:15)