Julia Louis-Dreyfus of Seinfeld and Desperate Housewives star Eva Longoria joined in as more than 3,000 film and television writers demonstrated in Hollywood on the fifth day of a strike, which has hobbled the entertainment industry with no resolution in sight.

Thousands of writers brandishing placards and clad in red t-shirts gathered outside Fox Studios in Century City to protest, in the biggest single demonstration since the strike began on Monday.

The writers' stance has earned sympathy from many Hollywood celebrities, including Louis-Dreyfus, Longoria and Kelsey Grammer of Frasier, who also attended the rally.

"Now people are, you know, drawing their lines and I'm hoping that the lines can be blurred enough that people come back together and start talking," Grammer told local television station ABC7.

"It affects the economy of Los Angeles."