If you have 4 minutes left, you are not, in fact, out of time.
That said, "Rain" is one of those easy-to-forget Madonna songs with an utterly striking video. It has a quality that is paradoxically both spare and lush (even if it sometimes dips into cliche and the song itself is lyrically average). What sets it apart for me is the luminosity imparted thanks to the film technique -- it was shot in black and white and then hand colored. Amazing clip from a woman who's made her fair share of videos (70, Wikipedia tells me).