Has been omitted from some network syndication due to the portraying of marijuana use.
Party guest Mr. Wannamaker, who has known the Arnold children since they were little, asks Kevin to do his James Cagney impression. Kevin reluctantly agrees for old times sake and strikes a Cagney pose as he points and says, "You dirty rat, you killed my brother!" referencing Dan Lauria. The latter loved to watch James Cagney movies and frequently had "double picture night," which featured Cagney films, at his house, inviting the cast of The Wonder Years (1988).
This episode is about the Arnold's annual Christmas party. Annual? Why was there no mention of it in past Christmas episodes?