Valentina's Tango (2006) Guillermina Quiriga & Jordi Caballero.  Plot is not good, but the tango dancing is a must see.,

Tango, Our Dance (1988) Good documentary.,

Tango Fatal (2006) Thumb down.,

Assassination Tango (2002) Robert Duvall, advit tango dancer, if some of you don't already know.  Bad movie plot, but good tango dancing.,

Tango Lesson (1997) Sally Potter.  Excellent a must see.