Animaniacs: Potty Emergency (partially lost cut scenes of animated series episode; 1993)
Animaniacs is an animated TV series about three siblings of the Warner family that aired on Fox from September 1993-September 1995 and then on The WB until November 1998. One of the most famous episodes, titled Potty Emergency, concerns Wakko having trouble finding a place to use the bathroom after the one at the movie is out of order. On current prints of the episode, two scenes are missing that have not resurfaced on the Internet.  The differing scenes are described below:
The first scene is a different version of the park scene where the man holding the hose turns it away from the camera. It was first mentioned on a fan community for the show in 1994, but it hasn't resurfaced anywhere online yet. According to Lost Media Wiki Archive user Lord Samhain, re-runs of the episode on the defunct Canadian channel Teletoon Retro channel had this scene intact. 
The second of these cut scenes is more well-known among the community of Animaniacs fans. As shown in the first surviving animation cels (available to view on this page) the episode originally ended with Dot complaining about the amount of trash people throw into the streets as they leave the movie theater. The second cel shows the siblings passing Wakko's mallet.