What type of details about john cassavetes can be gathered from the following bio? Bio: john nicholas cassavetes -lrb- december 9 , 1929 -- february 3 , 1989 -rrb- was a greek-american actor , film director and screenwriter . cassavetes was a pioneer of american independent film , by writing and directing over a dozen movies , some of which he partially self-financed , which pioneered the use of improvisation and a realistic cinema verite style . he also acted in many hollywood films , notably '' rosemary 's baby '' -lrb- 1968 -rrb- and '' the dirty dozen '' -lrb- 1967 -rrb- . he studied acting with don richardson , using an acting technique based on muscle memory . his children nick cassavetes , zoe cassavetes and xan cassavetes are also filmmakers .
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