The Simpsons finally triumphs over its long-running TV nemesis, Gunsmoke

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Smashing through a record that literally only ever comes up these days in the context of how long The Simpsons has been on the air, the canonically long-running Fox show is finally about to break Gunsmoke’s 635-episode hold on the title for longest-running scripted prime-time series ever. (For context, Gunsmoke was a TV Western that first aired in 1955, as part of efforts to ensure that there would someday be some kind of old-timey series that The Simpsons could destroy.)