He got his start in movies working as a grip on Quentin Tarantino's Reservoir Dogs, then interned at Good Machine eventually becoming Ted Hope's assistant.
Next he co-executive produced, along with Ted Hope & Anne Carey, an HBO television mini-series of Moisés Kaufman's play The Laramie Project.
It follows and in some cases re-enacts the chronology of Shepherd's visit to a local bar, his kidnap and beating, the discovery of him tied to a fence, the vigil at the hospital, his death and funeral, and the trial of his homophobic killers.
The mini-series mixes real news reports with actors portraying friends, family, cops, killers, and other Laramie residents in their own words.
Katz went on to co-produce two Academy Award Best Picture nominees; Todd Field's In the Bedroom and Sofia Coppola's Lost in Translation.