It was reported that four versions of the ending of this episode were shot. The correct one being used based on results of the mayoral election being held at that time. The syndicated rerun of this episode shows more footage of the mayoral campaign, featuring Rudy Giuliani, who was not credited for his appearance (unless you count the caption during his press conference).

Did anybody know this?

I have read this about the "F" word episode.
It's on theTV Tome (http://www.tvtome.com/tvtome/servlet/GuidePageServlet/showid-112/epid-2311/) site as well as others.
Big research lately? ;) I know, I know... just surfin' around :)

What the f**k are you doing, little piece of s**t, lol havent seen that one in a while, I didn't know 4 endings were shot, I wonder what the others were?

It would be nice if it was on a DVD as a special feature.