Interaction and grammar is a valuable addition to the Cambridge “Studiesin Interactional Sociolinguistics” series. The book is a collection of papers that all, in oneway or another, and within the frameworks of linguistic anthropology, functional grammar, orconversation analysis, investigate the interface, or rather the essential interrelatedness, oflanguage and real-time social interaction. The value of the book for the L2 researcher orpractitioner is perhaps not direct; however, because much of L2 research focuses on interactionand draws its data from naturally occurring discourse, the indirect contribution is notable. Inparticular, the chapter by Fox, Hayashi, and Jasperson beautifully underscores those typologicaldifferences between English and Japanese that lead to different interactionalstrategies—an issue of direct relevance to L2 studies.