Kate Walsh is widely known for her starring role as Dr. Addison Montgomery on the ABC drama "Private Practice," a spin-off of the hit show "Grey´s Anatomy" where Walsh made her first appearance in 2005. The enormous success of her character on "Grey´s" led ABC, along with writer and creator Shonda Rimes, to create a spin-off based solely on her character, Addison. "Private Practice" also stars Amy Brenneman, Taye Diggs and Paul Adelstein. The show premiered in September of 2007 as the highest-rated new series of the season, and debuted as the #1 show on Wednesday evenings. The show has continued its success and is recently wrapped its sixth season.