My wife and I both remember an episode of Sienfeld where Jerry had a verbal altercation with a man in a wheelchair. It seems like it took place at a movie theater but I know it happened. The man was such a jerk to Jerry and tried to provoke him into a fight. It was so funny. However, I can not find any evidence of this scence in the episode descriptions.
I feel it may have been removed from DVD because it could have possibly offended some handicapped people. I saw it when it was originally airing on TV but after going through every DVD, I have to believe the scene and description was removed.
I even believe the man at one point says to Jerry, "You don't want to fight because I'm in a wheelchair?"