The whole VFX / animation industry does (Score 3, Informative)

CentOS desktops are the norm in VFX. Artists run proprietary DCC softwares built for Linux such as Maya, Nuke, Houdini, Mari, Arnold, Flame... It's even standardized: http://vfxplatform.com/ Unfortunately, a few software vendors only live in the Win/Mac world (namely Adobe) and force us to dualboot.