The $1 Million question that helped Matt Damon bring clean water to 200,000 people and tease Jimmy Kimmel

It wasn’t just trivia glory; it was for a cause. On the July 30 episode of Who Wants to Be a Millionaire, Matt Damon and Jeopardy! host Ken Jennings clinched the show’s $1 million prize by answering the final question correctly, and their win reignited Damon’s legendary (and hilarious) “feud” with host Jimmy Kimmel.

The million-dollar question was: “Which of these words is often used to describe one of the most beautiful auditory effects on Earth: the sound made by leaves of trees when wind blows through them?”

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The options were: Apricity, Petrichor, Susurrus, or Eudaemonia.

Jennings initially guessed Susurrus, and after using the 50:50 lifeline, which narrowed it down to Petrichor and Susurrus, the pair went with his instinct. And they were right.

The confetti flew as Damon and Jennings celebrated their win, which will benefit Water.org, Damon’s non-profit that helps bring clean water to underserved communities. “This will reach 200,000 people,” Damon told Jennings on-air, as Kimmel jokingly offered a reluctant handshake.

The episode also delivered peak entertainment as Damon finally made his long-awaited appearance on Kimmel’s turf. “I’m not on your stupid show, I’m on Who Wants to Be a Millionaire,” Damon quipped, reigniting their years-long playful rivalry that began back in 2005.

What’s the Deal with Matt Damon and Jimmy Kimmel’s “Feud”?

Matt Damon and Jimmy Kimmel have been engaged in a long-running comedic “feud” that dates back to 2005, when Kimmel first joked on-air, “Apologies to Matt Damon, we ran out of time.” The quip became a recurring gag on Jimmy Kimmel Live!, with Kimmel pretending to bump Damon off the show night after night, despite Damon never actually being scheduled.

Damon leaned into the joke, and over the years, the two have staged countless humorous bits, including Damon hijacking the show, mock fights, and celebrity cameos poking fun at the rivalry. Despite how it looks, it’s all in good fun; both stars have emphasized it’s a scripted, friendly bit. Their banter has become one of late-night TV’s most iconic recurring gags.

On Who Wants to Be a Millionaire, Damon playfully reignited the feud, telling Kimmel, “I’m not on your stupid show, I’m on Millionaire – that’s way better.” Kimmel fired back with mock jealousy, making for yet another viral Damon-Kimmel moment.

What is Matt Damon’s Water.org?

Water.org is a global nonprofit co-founded by Matt Damon and Gary White that works to bring clean water and sanitation to underserved communities around the world. Launched in its current form in 2009, the organization focuses on creating sustainable water solutions by helping families access small, affordable loans to install taps, toilets, and safe water systems at home.

Rather than relying solely on donations and aid, Water.org uses a market-based approach to empower people with tools and financing so they can build and maintain their own water and sanitation systems. The model has proven effective, reaching over 60 million people across countries in Africa, Asia, and Latin America.

On Millionaire, the $1 million prize won by Damon and Ken Jennings will directly support Water.org’s mission, potentially impacting 200,000 people through expanded access to clean water.