I loved Queenpin and really enjoyed Die a Little. I really should read more of her - I used to look for her at the library and it looks like she's published a few more in the past several years that I haven't read yet.

Ironically, I fell in love with noir through Angel (TV) and have always thought it would be fun to write something noir-flavored. Simon R. Green's Nightside series is fantasy/supernatural noir that I also enjoyed (male lead, but some very interesting and sympathetic female characters), although I think the earlier books are stronger than some of the later ones.