When ABC announced that the extremely popular show "Grey's Anatomy" was to have an official spin-off, starring the lovely Kate Walsh as the tragically flawed but brilliant Addison Montgomery, fans had mixed reactions.

It's been a bumpy television season full of winners, disappointments and a lot of forgetful folks. Some shows stumbled right out of the gate while others took steady steps towards a full-season pickup.

Production has begun in Los Angeles on "Private Practice," a new drama from the creator of "Grey's Anatomy," Shonda Rhimes, featuring an all-star cast that includes Kate Walsh as Dr. Addison Forbes Montgomery, Tim Daly as Dr. Pete Wilder, Audra McDonald as Dr. Naomi Bennett, Paul Adelstein as Dr. Cooper Freedman,

Stephen McPherson, president, ABC Entertainment, today outlined ABC's plans for next season and unveiled the network's 2007-08 fall schedule. Scheduled to debut next season are four new comedy series: "Carpoolers," "Cavemen," "Miss/Guided" and "Sam I Am"; along with seven new drama series: "Big Shots," "Cashmere Mafia," "Dirty Sexy Money," "Eli Stone," "Private Practice," "Pushing Daisies" and "Women's Murder Club."

It might have seemed a shrewd marketing move for the producers of Grey's Anatomy to fold the pilot for a spin-off series (starring Kate Walsh as Dr. Addison Shepherd) into an extended episode of their hit show.