Playable Bodies investigates what happens when machines teach humans to dance. Dance video games work as engines of humor, shame, trust, and intimacy, urging players to dance like nobody's watching--while being tracked by motion-sensing interfaces in their living rooms. The chart-topping dance game franchises Just Dance and Dance Central transform players' experiences of popular music, invite experimentation with gendered and racialized movement styles, and present new possibilities for teaching, learning, and archiving choreography. Author Kiri Miller shows how these games teach players to regard their own bodies as both interfaces and avatars, and how a convergence of choreography and programming code is driving a new wave of full-body virtual-reality media experiences. Drawing on five years of ethnographic research with players, game designers, and choreographers, Playable Bodies situates dance games in a media ecology that includes the larger game industry, viral music videos, reality TV competitions, marketing campaigns, consumer reviews, social media discourse, and emerging surveillance technologies. Miller tracks the circulation of dance gameplay and related "body projects" across media platforms to reveal how dance games function as "intimate media," configuring new relationships among humans, interfaces, music and dance repertoires, and social media practices.