For example, KCMI in Kansas City just recently stopped playing South Park in September 2015, because the network took that right away from them, and the show can only air on Viacom stations, as it said recently on their Facebook page.

KPLR-TV(in St. Louis) has been airing The Andy Griffith Show for a long time now

WPIX-TV in New York has aired since the late 50s reruns of The Honeymooners.

I Love Lucy has been in syndication here in Los Angeles forever locally on KTTV 11 and recently on KCOP 13 (since it's now a FOX-owned station.

WTVZ in Norfolk, Va. showed Simpsons reruns from day one back in fall 1994. Looks like they finally stopped a couple of years ago, I'm guessing whenever the show started airing on FXX.

I don't think Seinfeld or Friends ever stopped airing since they entered syndication in the mid-to-late-90s. As a matter of fact, I think the latter has aired on WTVZ since 1998. Both air in the middle of the night now.

WTVZ in Norfolk, Va. showed Simpsons reruns from day one back in fall 1994. Looks like they finally stopped a couple of years ago, I'm guessing whenever the show started airing on FXX.

That's been happening with all of the local stations

Until 2014 or 2015, WKBD in Detroit had been airing reruns of "The Simpsons" since 1990. Of course, to be fair, it was Fox affiliate and also aired first run episodes of The Simpsons before becoming a UPN affiliate.