How I Met Your Mom Spinoff Casting: "How I Met Your Dad" cast Meg Ryan, the star of such hits as "When Harry Met Sally" and "You've Got Mail," in the upcoming spinoff to the series "How I Met Your Mom."  

Meg Ryan will be the voice of the future Sally, who is described as the new Ted. Greta  Gerwig is the "New Ted Mosby" in "How I Met Your Dad," the spin-off show from "How I Met Your Mother."  Meg Ryan has been cast as the narrator for CBS' How I Met Your Dad. 

Meg Ryan will mouth the unseen vocal role in the How I Met Your Dad pilot as "future Sally." In How I Met Your Mom, Bob Saget supplied the voice for future Ted. Saget, was also never seen.

How I Met Your Dad producers are reported to be nervous that the How I Met Your Mom spin-off may be in danger. The new show hasn't been picked up for a premiere season. If CBS does order it to series, it could begin as soon as this fall. The pilot will be shot in Los Angeles, but production will shift to New York for subsequent episodes. Greta Gerwig, from the movies "Frances Ha" and "Greenberg," has been saying that the pilot and the series will be different from How I Met Your Mother. 

 New star Greta Gerwig says the spin-off will be "different than the original. How I Met Your Dad will start with a divorce. When the premise of the show is that it's a young man looking for his true love, it's a very different feeling than a young woman looking for her true love. Craig and Carter are making it too, and Emily Spivey is so funny and great. She wrote for SNL for a long time, and wrote the show Up All Night, and I'm in love with her."

The co-creators of How I Met Your Mom, Carter Bays and Craig Thomas, are writing the pilot with Emily Spivey. They promise that How I Met Your Dad is just like How I met Your Mother, except from the female point of view. The spinoff will center on a group of friends living in New York and follow the main character, Sally, and her journey to meeting her future husband.  "Frances Ha" star Greta Gerwig is Sally. Sally is the new Ted, but unlike Ted (Josh Radnor), Sally is already married when we first meet her in the pilot.

According to a CBS press release, Sally is described as a "female Peter Pan who has never grown up and has no idea of where she's going in life. She has just figured out that she has nothing in common with her husband of less than a year, and will find a solid circle of support in her friends and family."

"How I Met Your Dad" is a spin-off of HIMYM, which ended after a successful run of nine years by revealing to the audience the elusive "mother." The cast of the How I Met Your Mother spinoff Greta Gerwig, Drew Tarver, Nick D'Agosto and Andrew Santino.