chunkay
CAGiversary!
They have planet earth for both blu-ray and hd-dvd for only $59.99. I know this is pretty expensive at places but Im not sure about online sites. I may bite on the hd-dvds but not sure.
http://www.bestbuy.com/site/olspage.jsp?_dyncharset=ISO-8859-1&id=pcat17071&type=page&st=8289951%2C+8289942&sc=Global&cp=1&nrp=15&sp=&qp=&list=n&iht=y&usc=All+Categories&ks=960
http://www.bestbuy.com/site/olspage.jsp?_dyncharset=ISO-8859-1&id=pcat17071&type=page&st=8289951%2C+8289942&sc=Global&cp=1&nrp=15&sp=&qp=&list=n&iht=y&usc=All+Categories&ks=960