The Chronicles of Ancient Darkness by Michelle Paver - six books in the series and the research and writing are some of the best I've ever read, set in Woodlands era, northern Europe, among the nomadic tribes
The Protector of the Small quartet by Tamora Pierce - girl power! medieval fantasy
Song of the Lioness quartet by Tamora Pierce - more girl power, with magic -- this one actually predates The Protector of the Small
Brand new science fiction, The Future of Us by Jay Asher and Carolyn Macker, author of The Earth, My Butt, and Other Big Round Things - in The Future of Us, a girl in 1995 gets a computer and a disk to load AOL, only she gets Facebook instead and she and her best friend learn about their future selves.
Roxy
Getting in touch with my inner try-athlete.