Jay Leno made a midmorning stop at NBC studios in Burbank and visited with strikers after the network said his late-night show would immediately go into reruns, .

CBS, meanwhile, said "The Late Show with David Letterman" will also offer repeats all week.

KTLA-TV reported that fans of the "Ellen" talk show were told at the NBC lot that there would be no taping on Monday.

Comedy Central previously said "The Daily Show with Jon Stewart" and "The Colbert Report" would likely go into repeats as well.

The strike will not immediately impact production of movies or prime-time TV programs. Most studios have stockpiled dozens of movie scripts, and TV shows have enough scripts or completed shows in hand to last until early next year.

The strike began after daylong talks Sunday failed to produce an agreement on payment to writers from shows offered on he Internet.

At the CBS lot in Studio City, about 40 people hoisted signs and applauded when picketing began.

Robert Port, a writer for the TV show "Numb3rs," said he was as ready as possible for what could be a long walkout.

"We live in Los Angeles, your bank account can never really be ready for this," he said.

Across town at the Paramount Pictures lot on Melrose Avenue, about 50 strikers dressed in jeans, athletic shoes and red strike T-shirts carried signs reading, "Writers Guild of America on Strike."