Law & Order: the show that launched a thousand spinoffs aired for an even twenty seasons, from 1990 to 2010. Twenty years with an ensemble cast and six main characters means there was a bit of a revolving door as characters (and actors) came and went. Some of the cornerstones stuck it out for the long haul, like S. Epatha Merkerson’s Lt. Anita Van Buren, Sam Waterston’s Jack McCoy, Stephen Hill’s DA Adam Schiff, and of course, Jerry Orbach, who continued to play Detective Lennie Briscoe up until his death. But even one new character changed a cast’s chemistry from year to year. There’s much debate on which is the “golden season” that strikes the perfect blend, but we’re here to put that to rest once and for all.