David 19 May 2009 http://www.hollywoodreporter.com/hr/content_display/news/e3id7e408c33433513280a804e9abf6f8d7 NBC renews 'Law & Order' 20th season ties 'Gunsmoke's' record By Nellie Andreeva "Law & Order" will match "Gunsmoke's" record 20-year run. NBC on Monday renewed Dick Wolf's veteran crime drama for a 20th season, sources said. The order is believed to be for 16 episodes. Wolf had been open about his desire to tie "Gunsmoke" for the longest- running drama series on television. Once a staple at NBC, "L&O," which spawned two successful spinoff series with "Law & Order: SVU" and "Law & order: CI," has seen its ratings slide in the last couple seasons when it served as a midseason replacement. Its current cast includes Jeremy Sisto, Anthony Anderson, Sam Waterston, S. Epatha Merkerson, Alana De La Garza and Linus Roache. NBC is slated to announce its schedule for next season Tuesday in New York.