Name ALL of the actors who have starred on "Law and Order"(the original series,NOT the sequels)since it debuted in 1990?

Answer:George Dzundra,Chris Noth,Dann Florek,Michael Moriarty,Richard Brooks,Steven Hill,Paul Sorvino,the late Jerry Orbach, Sam Waterston ,were some of the many actors who starred on "Law and Order"during its 20-year run on NBC from 1990-2010.

Jerry Orbach is the only one I knew from the original.... (He was also in TOY SOLDIERS (1991))