Forbes Guthrie over at http://www.vreference.com/ has just released the latest version of his ESX reference card this time for vSphere. This latest version has been completly rewritten since the popular VI3 card and is a must to keep on you when working with vSphere.
Link >> http://www.vreference.com/2009/08/24/vsphere-4-reference-card-now-available/
Virtualised Reality 