It wasn’t a performance. It wasn’t for TV. But when Tim Conway made Harvey Korman laugh one more time, it reminded everyone why their comedy never fades.

“I can’t stop laughing at this!”—that was the reaction echoing across audiences then and now as Conway and Korman delivered one of the most iconic sketches in television history: The Old Doctor.

What began as a straightforward comedy bit quickly unraveled into something far greater—a moment of pure, unscripted brilliance. From the first awkward entrance to the final collapsing punchline, every second felt like it was teetering on the edge of chaos. And that’s exactly what made it unforgettable.

Conway, playing the hilariously incompetent doctor, approached the role with his signature slow-burn style. His timing was deliberate, almost suspiciously calm, as if he knew exactly how far he could push each moment before it broke. And break it did. Whether it was a shaky hand, a delayed reaction, or an absurdly mistimed medical “procedure,” Conway turned simple physical comedy into an escalating disaster.

Standing beside him, desperately trying to maintain composure, was Korman. And he never stood a chance.

Korman’s role was crucial. As the straight man, he was meant to anchor the scene, to react with seriousness and guide the narrative forward. But Conway had other plans. With every drawn-out pause and unexpected gesture, he chipped away at Korman’s resolve. You can see it happen in real time: a twitch at the corner of his mouth, a quick glance away, a silent battle to stay in character. And then—inevitably—the laughter wins.....