Steve McCafferty's edited book Gesture: Second Language Acquistion and Classroom Research was recently published by Routledge.

From the publisher: This book demonstrates the vital connection between language and gesture, and why it is critical for research on second language acquisition to take into account the full spectrum of communicative phenomena. The study of gesture in applied linguistics is just beginning to come of age. This edited volume, the first of its kind, covers a broad range of concerns that are central to the field of SLA. The chapters focus on a variety of second-language contexts, including adult classroom and naturalistic learners, and represent learners from a variety of language and cultural backgrounds.