As stated in the Introduction, this edited volume aims to achieve two overlapping goals: to celebrate the diverse set of research falling under the label “language and social interaction” (LSI), and to honor the work and teachings of Robert Hopper, who died in 1998. Toward the first goal, the book begins, following the Introduction, with 32 original essays divided into 4 parts: “Orienting to the field of language and social interaction,” “Talk in everyday life,” “Talk in institutional settings,” and “Emerging trajectories: Body, mind, and spirit.” The contributors are largely researchers well known for their work in the area of conversation analysis (CA), including Emanuel Schegloff, Gail Jefferson, Paul Drew, John Heritage, Anita Pomerantz, Chuck Goodwin, and Gene Lerner, but the articles also cross disciplinary borders to incorporate research on cognitive processing, gesture, speech evaluations, sociolinguistic variables (e.g., gender), and ethnography. To meet the second goal, the volume not only brings together a mixture of Hopper's former students and colleagues, but it also ends with a fifth part, titled “Robert Hopper: Teacher and scholar,” which is devoted to more personal messages about Hopper and his work, including a final chapter with his acceptance speech for the National Communication Association mentorship award. This last section of the book brings the total number of chapters to 39 and the number of pages to more than 600 (including the Index).