Rosie O'Donnell is never one to hold back. In an Aug. 19 Instagram post, she called out fellow TV icon Jay Leno for a mean-spirited 2009 segment from "The Tonight Show with Jay Leno," which was revisited in the new Netflix docuseries " Fit for TV: The Reality of the Biggest Loser ."

The former talk show host called out Leno after archival footage of him appeared in the Netflix docuseries, showing him reading death threats to Tracey Yukich.

Rosie O’Donnell has strong feelings about Netflix’s “Biggest Loser” docuseries. After watching “Fit for TV: The Reality of the Biggest Loser,” O’Donnell publicly called out Jay Leno for how he treated former contestant Tracey Yukich in the doc.