Below is a list of every episode on the site for Hey Arnold! which has mistakes in it - if your favourite episode's not listed, that just means it's flawless! So far... "All of series 1" and similar entries are those mistakes which apply an entire series, but not across the whole show. They're also counted as episodes, so don't be surprised if the total up top doesn't reflect the actual number of episodes recorded for a show. This list is ordered by series, then episode title by default - click the options below to change the ordering.