I have the Samsung Vr goggles and love them.
Best free content I've found;
"Within", is an app/library with a few short titles worth the download. The best of which is the only decent scary one I know of, "Catatonic". (1950's mental hospital tour).
Ocean Rift demo is great, but not sure I want to spring $15 to unlock it all.
As to paid titles, I recommend evil robot traffic jam (for tower defense lovers), or Archer E Bowman (for FPS play).
NB: samsung recently released their video camera for shooting 360 footage too.