I don't ever remember Ed Koch on The People's Court! WAS it him or did you mean Judge Wapner?
It sure was His Honor, the affable Judge Ed Koch.
He was himself, which made the show all the more interesting to me.
Second version (1997-present)
On September 8, 1997, a new version of The People's Court debuted in first-run syndication as a 60-minute program. The series as a whole reached its 32nd season on September 5, 2016, with its 20th season in its current production cycle. By that point, the 1997 revival has already outlasted its original version, which ran 12 seasons. The show's second life has been headed by three judges since its debut.
Ed Koch (seasons one-two, 1997-99)
When the new People's Court premiered in 1997, former New York newscaster Carol Martin of WCBS-TV hosted from a studio with Harvey Levin, who was involved with the prior edition of the series as a legal consultant, serving as a co-host in the field taking questions and opinions from people at the Manhattan Mall, then returning to the studio at the end of the show for a wrap-up. Curt Chaplin was hired to serve as the show's announcer and to fill Doug Llewelyn's position as the court reporter, although with the addition of a host, his role was limited to interviewing the litigants after the conclusion of each case.
Former New York City Mayor Ed Koch presided over the court from September 8, 1997, to June 25, 1999 (with reruns airing until September 10).[14] Several months into the run, Martin departed the series and Levin became the series' sole host. The studio segments were done away with and Levin hosted the entire episodes from the viewing area, which eventually moved from the Manhattan Mall to the Times Square visitors' center. Since Levin is now based in Los Angeles with TMZ, the viewing area has moved to the Third Street Promenade in Santa Monica, California, while production of The People's Court has moved to Connecticut. The opening outlines of the taped cases are shown to people in the outdoor viewing area on a monitor. Their responses are edited into the program.