How will late-night shows change?

What should viewers expect? There’s no telling, some people say.

By DAVID BAUDER

AP TELEVISION WRITER

NEW YORK — Jay Leno, Conan O’Brien, Jimmy Kimmel and Jon Stewart all plan returns to late-night television the next two weeks, but aside from their familiar faces, viewers may not recognize much.

After two months away because of the still-unresolved writers strike, NBC’s Leno and O’Brien, and ABC’s Kimmel, resume their programs Wednesday. Jon Stewart and Stephen Colbert come back to Comedy Central Jan. 7.

Barring a New Year’s miracle, none of their writers will be joining them.

David Letterman is also pushing to return Wednesday, but his Worldwide Pants production company is still trying to reach its own deal to bring his show’s writers back onboard.

The hosts — with the exception of NBC’s Carson Daly — are also members of the striking Writer’s Guild of America, making them subject to union rules that would severely limit what they can do.

The union’s strike rules say members cannot write or perform any material that would normally be written for them. Under this interpretation, for example, Jay Leno couldn’t perform a monologue, because his staff of writers normally crafts his jokes.

The comic skits that are a part of several late-night shows would also be off-limits without writers.

“I think that people will see some interesting television,” said Chris Albers, former president of Writer’s Guild of America East and a comedy writer for O’Brien. “Obviously, these are some of the funniest people in the country so they’re probably going to do a very good job. It’s just a different animal than what they’re used to and what we’re used to.”

In a conference call with reporters last week, producers of NBC’s “Tonight” and “Late Night” said they were still trying to figure out what their shows would look like. They weren’t willing to talk further, a spokesman said.

Comic ad-libbing, musical performances and lengthier appearances by interview subjects willing to cross picket lines are the most likely recourse.

“I don’t know what they’re going to do,” said Mike Sweeney, head writer for O’Brien’s NBC show. “My obvious speculation would be more guests, and maybe talk to them more slowly.”

Stewart and Stephen Colbert would appear to have the toughest time reconfiguring their programs, which have a large amount of scripted material. By a strict interpretation of the guild’s rules, a member would be prohibited from performing as a character if union writers normally write material for the character.

Colbert performs his entire show in the character of a blowhard political commentator.

“We don’t know how he’s going to do it,” said Sherry Goldman, spokeswoman for the Writers Guild of America East, “and I’m not so sure that he’s figured it out yet.”