Today's version of Bionic Woman, as much as the original series back in the `70s, relies quite heavily on the impact of its lead actress. In the first Bionic Woman, the series actually came about as a result of audience response to Lindsay Wagner's portrayal of Jamie Sommers in a handful of episodes of its parent show, The Six Million Dollar Man.
In the modern retelling of the series, Michelle Ryan has taken the cudgels from Wagner, playing Jaime Sommers as a mechanically enhanced bartender. Aside from Ryan, another strong female presence on the show is Katee Sackhoff, best known as daredevil starship captain, Kara "Starbuck" Thrace on a remake of another `70s classic, Battlestar Galactica.