TVSquad

Guest stars can be good and guest stars can be not-so-good, but this one sounds like a winner to me. EW's Michael Ausiello has an exclusive report that Florence Henderson will be on Samantha Who?

And if you think Christina Applegate kind of looks like she could be related to Florence, you're not alone. The Brady Bunch veteran has been cast as Samantha Newly's grandmother, Jean Smart's mama. And if that's not blonde goodness and potential hilarity for you, TVGuide.com has another exclusive; Christine Ebersole will play Sammy's aunt. In the very same storyline!

There are six human beings on this planet who will be forever linked by one experience: growing up on the set of The Brady Bunch. But, of the six actors who played the Brady kids during the show's 1969-74 run, none has embraced the role as consistently and enthusiastically as Barry Williams, who played Greg. Over the years, Williams has been involved in every reunion show (including the ill-fated "dramatic" show The Bradys in 1990) and has never shied away from discussing the show during interviews. He even wrote a book about the experience, 1992's Growing Up Brady: I Was a Teenage Greg, where he recounted stories like his crush on co-star Maureen McCormick, his "date" with his TV mom, Florence Henderson, and Robert Reed's constant arguments with the producers. The book was made into a TV movie in 2000.

Now, at 53, Williams has a blog, called The Greg Brady Project, which debuted in December. There, Williams tells stories about his experiences as an actor over the last 40-plus years while a series of co-writers wax nostalgic about the past, and not necessarily about The Brady Bunch. I spoke to Williams by phone earlier this month. We talked about the blog, why he's embraced his Greg Brady past more than his co-stars, and what he thinks of some of those co-stars' new projects. The interview is after the jump.

The buttoned down mind of Bob Newhart is coming back to TV. In August, Hallmark Channel will present Newhart in Herb's Murders, a two-hour original TV movie. And that's not all. Hallmark, which yesterday announced Jane Seymour in a detective movie called Dear Prudence, has other old TV favorites slated for original telefilms.

There's former 7th Heaven star Stephen Collins will star in The Ride of Her Life; Jacqueline Bisset has a holiday pic in the works called Thanksgiving Reunion, which will air in November; and Pam Grier, Florence Henderson (The Brady Bunch) and Donna Mills (Knots Landings) will headline Ladies of the House, about three women from the same church who team up on a home renovation project.