longest running cartoon tv show
The Simpsons to become longest-running US TV series. The Simpsons is about to become the longest-running prime-time United States television series after Fox ordered two more seasons of the animated comedy, which started its run in 1989. 1  TV guide: UK listings. 2  On TV tonight: Back in Time for the Weekend. 3  The 80 best films on Netflix.  Films on TV tonight.