Don't hold your breath over that highly anticipated spinoff from "The Office" next season.

According to Greg Daniels, executive producer of "The Office," a spinoff isn't high on his priority list right now. He is, however, working on a new sitcom starring "Saturday Night Live" regular Amy Poehler. But that's not coming anytime soon either.

For one, Poehler is pregnant and doesn't want to work on such a big project for a few months. She'll return to "SNL" this fall up through the elections.

"We're going to concentrate on doing the show for Amy now because there is not enough hours in the day for us to do three shows at the same time," Daniels says.

And what would a sitcom starring Poehler be like? Daniels isn't saying.

With reports running wild about an "Office" spinoff and Poehler's upcoming series, Daniels set the record straight on what's coming and what's not. NBC is so high on the spinoff idea that it announced its arrival at last spring's presentations of programs to advertisers.

The announcement was made without executives' seeing a script and having little more than a concept to work from.

"We had agreed to come up with a new show," Daniels says, "and [NBC] wanted [us] to do a spinoff.

"As we came up with ideas, we had ideas that were appropriate for a spinoff. We had ideas that were similar ... but not actually a spinoff. To do a spinoff, you have to have a believable idea of why a Scranton paper salesman would go out into the world."

When Poehler expressed interest in doing a prime-time series, Daniels relished the idea. He liked using her in one of his ideas, but "it wasn't one of the ideas that could connect her back to 'The Office.' "

He says Poehler's show could act "as a companion piece to 'The Office,' so if you watched them in the same night you'd be satisfied." (Terry Morrow, Scripps Howard News Service)

As "ER" marches to the end of its 15th and final season, the body count will begin. Executive producer John Wells says not all of the current cast members will be around for the series finale in 2009. When asked if he will be killing off any of the current characters during the final season, he replied, "I don't really want to answer that. Take that answer for what you will."

What if Wells does kill off someone? "It would be someone whose story has played out," he says.

Noah Wyle will return to the series near the end of the season, Wells says. He doesn't think George Clooney, one of the original cast members, would have time to reprise his role.

"We had always planned that the end of the series would involve Noah returning because he was so central as a new character at the very beginning, an entering character growing up in the ER," Well says. "So we pulled out those old notes and came out with a lot of new things."

As "ER" gets ready to mount its last season, the series is bringing aboard Angela Bassett as the new chief of the emergency room. Despite rumors to the contrary, Wells says Bassett is not being introduced for an eventual spinoff.

Wells says no "ER" spinoffs are in the works. NBC did ask Wells once to look at spinning off the hit series, with the stories looking at other emergency rooms around the country. "Sort of like how 'CSI' did 'CSI: Miami,' " he says. (T.M.)

Sesame Street unfolds its 39th season, beginning Monday, strictly by the numbers.

With a brand-new resident and a roster of big-name visitors, the iconic series will focus on "math from a literacy perspective, where we tie math words into our vocabulary," said Carol-Lynn Parente, the show's executive producer.

The focus on mathematics includes a laundromat on set as "a fun addition that will have lots of cool math words to offer," Parente said. The laundromat also serves as a workplace for Leela, whom the series bills as its first Indian American regular.

This season features other new segments shot on location ("Murray Has a Little Lamb," starring a sheep that speaks only Spanish) and in Claymation ("Bert and Ernie's Great Adventures").

Celebrity guests this season include actors Jessica Alba and Kim Cattrall, "American Idol" judge Randy Jackson, supermodel Heidi Klum and journalist Brian Williams. Also paying a visit: the Washington Redskins' Jason Taylor. (Kathy Blumenstock, The Washington Post)

Long considered a possibility to replace William Petersen as star of CBS's hit "CSI: Crime Scene Investigation," Laurence Fishburne has now emerged as the leading suspect.

According to The Hollywood Reporter, Fishburne is in talks to play a new character in the "CSI" family, a doctor with a very particular genetic profile.

"He is an outsider coming into the CSI unit," CBS Entertainment president Nina Tassler told reporters last month at the Television Critics Association press tour. "He comes in not immediately as the boss, but he has an interesting genetic profile that in certain sort of medical contexts, they've noticed that many times serial killers have that same genetic profile. And this gentleman knows this about himself and is sort of in this journey and -- and to discover who his true character will ultimately become."

Petersen, longtime star and executive producer on the highly rated drama, is expected to depart "CSI" after the season's 10th episode, though the show's team will make his exit open-ended enough to allow for possible sweeps-timed cameos. (Daniel Fienberg, Zap2it.com)

Pennsylvania Attorney General Tom Corbett will serve as guest host and take listener calls on "The Inside Story With Marty Griffin" today, 9 a.m. to noon, on KDKA-AM 1020 and KDKAradio.com.

Topics will include Internet child predators and consumer protection, and Corbett plans to have guests join in the discussion. (Staff report)