The development of 3D animation systems has been driven primarily by a hyper-realist ethos, and 3D computer graphic (CG) features have broadly complied with this agenda. As a counterpoint to this trend, some researchers, technologists and animation artists have explored the possibility of creating more expressive narrative output from 3D animation environments. This article explores 3D animation aesthetics, technology and culture in this context. Synthesizing research in CG, neuroesthetics, art history, semiotics, psychology and embodied approaches to cognitive science, the nature of naturalistic vis-avis expressive visual styles is analysed, with particular regard to expressive communication and cues for emotional engagement. Two foundations of naturalistic 3D CG, single-point perspective and photorealistic rendering, are explored in terms of expressive potential, and the conclusion considers the future for an expressive aesthetics in 3D CG animation.