Will Arnett: Catalyst for Bradley Cooper’s Sobriety and Star of ‘Is This Thing On?’

Will Arnett is a name often synonymous with sharp wit and comedic timing. But in recent years, his story has shifted from the punchline to the profound, as he’s been credited with changing the trajectory of Bradley Cooper’s life—and now, he’s starring in a film that reflects some of those very same themes.

The turning point came in July 2004. Bradley Cooper, then 29, was struggling with cocaine addiction and low self-esteem. The world saw a rising actor, but Cooper himself was on the brink. That’s when Will Arnett stepped in—not with advice, but with honesty. Cooper has publicly stated that Arnett was the “reason” he got sober, describing a difficult conversation that forced him to confront his reality. “He had that hard conversation with me,” Cooper told The Hollywood Reporter in December 2025, echoing sentiments first discussed on Arnett’s SmartLess podcast back in 2022. For Cooper, that moment wasn’t just a wake-up call; it was the start of something new.

Their friendship, which dates back to the early 2000s when Arnett was married to Amy Poehler, has only deepened with time. It’s not just a Hollywood bond—it’s a connection forged through vulnerability and mutual respect. And now, it’s resulted in a creative partnership that’s making headlines.

“Is This Thing On?”—the comedy-drama co-written by Arnett and directed by Cooper—premiered at the New York Film Festival on October 10, 2025, before hitting U.S. theaters on December 19. In the film, Arnett plays Alex Novak, a middle-aged man whose marriage to Tess (portrayed by Laura Dern) is unraveling. Instead of retreating, Alex steps up to the mic, embarking on a stand-up comedy journey that’s both awkward and authentic. Cooper joins him on screen as “Balls,” Alex’s loyal friend, adding another layer to their real-life dynamic.

The inspiration behind the film’s storyline draws loosely from British comedian John Bishop, who famously took to the stage during a turbulent period in his life. The movie doesn’t shy away from the messiness of personal reinvention; instead, it leans in, letting Arnett’s character stumble, joke, and grow in front of an audience—sometimes painfully so.

Critics have noted that Arnett’s performance is a departure from his usual comedic bravado. Here, he dials it down, letting vulnerability take center stage. Laura Dern’s portrayal of Tess adds emotional complexity, grounding the story in the realities of fractured relationships and the search for meaning when everything seems to be falling apart. Under Cooper’s direction, the film finds its rhythm in the tension between humor and heartbreak.

To cap off a whirlwind year, Arnett and Dern are scheduled to appear on the “Graham Norton New Year’s Eve Show” on December 31, 2025. The episode airs on BBC One and BBC iPlayer at 10:30 PM, and for viewers in Scotland, it’ll be a midnight treat at 12:30 AM on January 1, 2026 (NationalWorld). The duo will discuss the making of “Is This Thing On?” and reflect on the personal journeys that shaped the film.

Arnett’s role in Cooper’s sobriety and their creative collaboration on “Is This Thing On?” highlight the power of honest friendship and the courage it takes to confront one’s demons. In a world where celebrity relationships often seem superficial, theirs is a reminder that real conversations—sometimes the hardest ones—can alter lives and inspire art.

In examining Will Arnett’s impact, one thing becomes clear: the most significant transformations often start with a single, unfiltered moment of truth. Arnett’s intervention didn’t just save a friend; it set the stage for both men to redefine themselves, on and off screen. Their story challenges us to ask—who in our own lives might need that honest conversation, and what could change if we have it?