I know the nexus player doesn't have IR support, and even still I never set it up w/ my TV's remote. My best guess is that there's some protocol over HDMI that my TV speaks and the Nexus Player understands. Has anyone experienced this?
It's nice b/c now I can use just one remote (no switching back and forth to change volume). Seems to have a slight lag in response time, but otherwise it's a nice feature!
[edit] Apparently this is called HDMI-CEC
HDMI CEC. The Nexus Player home button will also turn on your TV.