Nice article on developing for VR and its challenges
The article concerns small studio nDreams and discusses the development of its adventure title for Project Morpheus. There are a few good tidbits about best practices and some fun ideas they explored in VR game development. There's also a teaser trailer.
http://www.gamesindustry.biz/articles/2014-07-29-there-are-a-lot-of-ways-you-can-mess-up-vr-really-easily
http://www.gamesindustry.biz/articles/2014-07-29-there-are-a-lot-of-ways-you-can-mess-up-vr-really-easily