South Park (Comedy Central)
Age: 16 seasons, one of the longest-running scripted shows on TV.
Senior Power: South Park ranks as cable’s top series among young men, averaging 3 million viewers.
Survival Secret: Smart, funny and crass is a combination that doesn’t get old — and neither do animated characters. Also, creators Trey Parker and Matt Stone often race to write episodes less than a week before the telecast, so the show can take on topical issues.
Life Expectancy: The creators have deals through 2016, which will bring South Park to 20 seasons. Beyond that, it’s probably up to the guys whether they want to continue. Fans took last year’s melancholy “You’re Getting Old” episode as a hint that Parker and Stone are weary of the show, but they insisted during a follow-up interview, “We love South Park, that’s still our thing.”