Rosie O’Donnell Crushes Ratings As ‘Jimmy Kimmel Live!’ Summer Guest Host

Rosie O'Donnell proved she still commands late-night television. Taking the reins of *Jimmy Kimmel Live!* for the week of August 17, the legendary entertainer delivered the talk show's biggest audience of the summer. Viewers tuned in en masse to watch the veteran comedian helm the ABC flagship while regular host Jimmy Kimmel took his annual seasonal break. Nielsen data reported by LateNighter reveals O'Donnell averaged a staggering 2.17 million total audience members alongside 237,000 in the coveted key demographic using live-plus-three-day metrics. Those figures mark the highest performance for the program since mid-June, right before a star-studded rotation of guest hosts stepped up to cover Kimmel's absence.

O'Donnell easily outpaced the celebrities who filled the seat earlier in the summer. A roster of guest presenters including Tiffany Haddish, Ike Barinholtz, Colman Domingo, and Anthony Anderson had previously taken their turns behind the desk. When O'Donnell took over from Anderson—who hosted the week of August 9—she generated a massive 40 percent jump in total viewership and a 34 percent surge in the key demographic. The ratings surge wasn't just a win within the building; it also cemented ABC's dominance over the late-night battleground. O'Donnell's week comfortably crushed NBC rival *The Tonight Show Starring Jimmy Fallon*, which pulled in an average of 1.43 million viewers and 171,000 demo audience members during the same period. Meanwhile, syndicated competitor *Comics Unleashed* trailed far behind with 654,000 total viewers and 75,000 demo viewers across the hour.

BUZZBEAT

Audiences clearly responded to O'Donnell's signature screen presence and seasoned interview style. Her strong performance also provided a halo effect for the network's broader late-night lineup, lifting ratings for the news program *Nightline*, which airs immediately following Kimmel's late-night broadcast. O'Donnell's blockbuster week confirms that retro talk show magic still draws huge television audiences. As network executives look to keep viewers engaged through summer reruns and fill-in hosts, the former daytime queen demonstrated that her late-night star power remains completely intact.