Hey Arnold! The Movie (2002)

When a powerful developer named Mr. Scheck wants to knock down all the stores and houses in Arnold's neighborhood to build a huge "mall-plex", it looks likes the neighborhood is doomed to disappear. But with the help of a superhero and a mysterious deep-voiced stranger, Arnold and Gerald will need to recover a crucial document in order to save their beloved neighborhood. (imdb)
Cast and Information
Directed By: Tuck Tucker
Written By: Craig Bartlett
Starring: Christopher Lloyd, Paul Sorvino, Jennifer Jason Leigh, Tress MacNeille, Dan Castellaneta, Jamil Walker Smith, Francesca Marie Smith, Spencer Klein
Genres: Comedy, Family/Kids, Adventure, Animation
Franchise: Hey Arnold!
Country: USA