Well well well. I'm currently listening to the original 1975 cast recording of Chicago. This includes Jerry Orbach as Billy Flynn. The fact that he was in the cast amused me, since he was the dad in Dirty Dancing. However, a little bit of reading on wikipedia and I've discovered another factoid in the the sheer incestuous nature of performing arts.

Jerry Orbach was in Chicago, and was also in Dirty Dancing with Patrick Swayze, who was also in Guys and Dolls on the London West End when Dirty Dancing opening. Guys and Dolls also played in 1965 on Broadway with Jerry Orbach. Ya! Jerry Orbach was lumiere in Beauty and The Beast, Disney, with musical and lyrics by Alan Menken and Howard Ashman, who also wrote Little Shop of Horrors. Little Shop of Horrors currently stars Mike McShane in London. Mike McShane was in Robin Hood, Prince of Thieves with Brian Blessed, who was in the original production of Chitty Chitty Bang Bang on the London Stage. Chitty Chitty Bang Bang originally starred Dick Van Dyke, who appeared in a Night At The Museum with Robin Williams. Robin Williams appeared in Alan Menken and Howard Ashman's Aladdin...

...and so it goes on.