Ok I've been lurking for awhile and finally decided to join and put my 2 cents in. The fact that I've picked such a contraversial subject to get my feet wet means I'm either crazy,stupid or both, but here goes:

Harry:Timothy Olyphant
Murphy:Elizabeth Rohm
Thomas:Alex O'Loughlin
Susan:Shannyn Sossamon
Luccio/Ana:Claudia Christenson/Mila Kunis
Morgan:Kevin Mckidd
Ivy:Ellie Fanning
Kincaid: Ray Stevenson
Mab:Julie Benz
Lea:Nicole Kidman
Maeve:Amanda Sayfreid
Lara:Rhona Mitra
Lilly:Yavonne Strohavinski
Fix:Nick Stahl
Molly:teenager-Dakota Fanning,young adult-Elisha Cuthbert
Micheal:Kyle Chandler
Charity:Elizabeth Mitchell
Rawlins:Ernie Hudson
Butters:Ian gomez
Sheila/Lash:Amanda Peet/Tricia Helfer
Eb McCoy:Sam Elliot
The Merlin:Donald Sutherland
Bianca:Stana Katic
Marcone:Viggo Mortensen
Gard:Stephanie March
Margaret Lafey:Carla Gugino

I realize that Liam Neeson didn't make it on my list, while he was on everyone else's, because after reading "Changes" I can only see him in one role. He'd look really cool with an eyepatch. And that's my dream cast for the Dresdenverse(goes and puts on his Nomex undies for the inevetable flames coming his way)