But the rest of the top 10 is dominated by Honda and Toyota. Cars.com just released its annual American-Made Index for cars, timed for Fourth of July week. At first glance, the list seems bizarre.
The original 'Law and Order' series ran for 20 seasons (1990-2010) with 456 episodes. Fb.31427261982507.
In spite of its enduring presence, however, Law & Order is not the longest-running TV show of all time. If you take the number of seasons (or the length of time a show has aired) as your benchmark, NBC's Meet the Press is the winner, with 66 seasons and 67 years on air [source: Today ]. But in order to determine which is the longest-running show, you'll also need to consider how you want to define the term TV show..