In the late 1980's, Groden was a consultant for Oliver Stone's 1991 film JFK, even appearing in two brief cameo roles: as a Parkland doctor working to save the President and as the courtroom projectionist showing the Zapruder film during the Clay Shaw trial in New Orleans.
ɪnðə lˈeɪt nˈaɪntiːnhˈʌndɹɪd ˈeɪɾi, ɡɹˈoʊdən wʌzɐ kənsˈʌltənt fɔːɹ ˈɑːlɪvɚ stˈoʊnz nˈaɪntiːnhˈʌndɹɪd nˈaɪnti wˈʌn fˈɪlm dʒˌeɪˌɛfkˈeɪ, ˈiːvən ɐpˈɪɹɪŋ ɪn tˈuː bɹˈiːf kˈæmɪˌoʊ ɹˈoʊlz: æz ɐ pˈɑːɹklənd dˈɑːktɚ wˈɜːkɪŋ tə sˈeɪv ðə pɹˈɛzɪdənt ænd æz ðə kˈoːɹtɹuːm pɹədʒˈɛkʃənˌɪst ʃˈoʊɪŋ ðə zˈæpɹuːdɚ fˈɪlm dˈʊɹɹɪŋ ðə klˈeɪ ʃˈɔː tɹˈaɪəl ɪn nˈuː ˈɔːɹliənz.