The Simpsons (Fox)
Age: 24 seasons.
Senior Power: Getting softer in recent years, The Simpsons still enjoys a time-slot victory on Sundays now and then, and ranks as a weekly Top 25 show in the adult demo.
Survival Secret: Has there ever been a larger or more diverse cast of distinctive funny characters than the population of Springfield? Unlike some of The Simpsons‘ younger animated rivals, every joke on the show feels like it could only have come from the character who said it.
Life Expectancy: The Simpsons is a huge part of Fox’s brand and legacy. Yet after decades of easy renewals, we saw the first major sign that The Simpsons is mortal during the show’s protracted contract renewals last year. If that pickup was hard, the next could be harder. Renewed through the end of 2013 as part of a two-year deal, most expect The Simpsons to receive at least one final round.
Runner-up: Family Guy — bigger ratings, nearly half Simpsons‘ age (13 seasons)