its not a private note actually. but in John Ritter page you have written the year 2003 as he died. but in his Filmography collomon we notice that he have appeared in movies in year 2004. so if that is true ,it needs a little explanation.
There are numerous IMDb name pages in which a person is credited on projects after their death. In the case of John Ritter, check the trivia sections of the titles after 2003, which acknowledges his death.
If that's not satisfactory, you or a contributor could submit a trivia item indicating that three projects were released after his death. Personally, I wouldn't submit that specific trivia item because it's repeats information already listed on his filmography.