Hey Arnold! aired from 1996 to 2004 on Nickelodeon and is centreed on Arnold, a fourth-grader who lives with his grandparents in a big city. Jazzy and street-smart, the show never pulled any punches. Every now and then, it would give us all the feels, especially when it dealt with Arnold's parents, which is why this movie is the best!
Watch Hey Arnold! The Jungle Movie on Netflix.