Often when I’m watching a movie from days gone by (usually the 1970s or 1980s), I shake my head and think: didn’t they know how awful the women’s hair was? Was everyone on the set on drugs? (In those days, probably yes.) This thought was prompted by a recent watching of “Working Girl,” my favorite Mike Nichols movie of all time (yes, even more than “Virginia Woolf”) and marveling at the messes sported by Joan Cusack and Melanie Griffith. Michael Musto must be on my same wave length this week, cuz he featured the duo in his list of the Best Hairdos in Movie History.