"Camera balls." That's what 'Real Housewives of Orange County' star Gretchen Rossi calls the change that washes over reality TV folk when they know it's time to amp up the drama for ratings. And she says one of her fellow wives on the Bravo hit has the biggest pair.

"Tamra [Barney] definitely turns it on for the cameras," Gretchen tells me of her co-star during a visit to my HDNet show. "She and I get along really well off camera, but when we're on camera she's just mean and evil. Not nice."