Ideas for voices for my characters

In a moment of madness before a gaming session I put together a list of voices that I think would go good with my characters.  I'm not quite as locked in for the voices of Thrawn and James as I am on the others.  What do people think?  

Sonya:  Jennifer Hale (Mass Effect - Cmdr.  Shepard)
www.youtube.com/watch?v=p5Esbt…

Westner: Joshua Jackson (Fringe - Peter Bishop)
Elune:  Anna Torv (Fringe - Olivia Dunham)
www.youtube.com/watch?v=xhsqBG…

UFAP President Alander: Mary McDonnel (BSG - President Laura Roslin)
www.youtube.com/watch?v=nV-TH4…

Grand Admiral Serena Thrawn:  Cate Blanchet
www.youtube.com/watch?v=vOulsE…


Ariel: Moon Bloodgood (Falling Skies - Anne Glass)
www.youtube.com/watch?v=ZH78TZ…

Katherine “Kat” Kerrigan: Grace Park (BSG - Sharon Valerii)
www.youtube.com/watch?v=U6_aDD…

Nova: Jaime Murray (Warehouse 13 – H.G. Wells)
Striker: Eddie McClintock (Warehouse 13 – Pete Lattimer)
www.youtube.com/watch?v=KTvgKN…

Kestrim: Morena Baccarin (Firefly – Inara)
www.youtube.com/watch?v=HkfG9I…

James Hunter:  David Tennant
www.youtube.com/watch?v=vlq_c9…