My mother is obsessed with the 1970s in the way that I am obsessed with the 1990s. It's a nice symmetry. I feel so lucky that my mother showed us "Grease" over and over again in our childhood. I don't know many movies before the 1980s. I don't know many of the famous classic musicals that everyone raves about and references. But I know "Grease"! And we love "Grease"!
The thing is, "Grease" is a movie and a musical -…