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Yes a movie is being made in which the plight of the Kashmiri Pandits is shown by Indian film director, editor, writer and producer Onir or Onirban Dhar. His " I am " has Juhi Chawla playing the role of an estranged Kashmiri Pandit lady Megha.
About the Sikhs after the 1984 riots I think there were a lot said through Khushwant Singh's writings and I can mention a film in which the Delhi riots were the core subject of film Kaya Taran (Chrysalis) (2004), by Shashi Kumar, based on the Malayalam short story "When Big Tree Falls" by N.S. Madhavan .