You never know what someone right next to you is going through, and if it will be the difference between a craptastic day and one filled with a little sunshine and hope, then don't keep back on a kind word.
The unloved Olivia Newton-John clunker from 1980, "Xanadu," would seem an unlikely source for a show with critical and cult appeal, but Douglas Carter Beane's witty deconstruction of the craptastic movie got everyone on its side.