VMware Technical Publications has released another great video. This one gives an overview of available authentication methods including session files, Active Directory, and configuration files. It also explains how to run commands against vCenterServer systems to target ESXi hosts in lockdown mode on vCLI in vSphere 5.0.
Check it out!
There is also another great vCLI video as well which gives an overview of vCLI commands in vSphere 5.0. Unlike the above video, this one discusses ESXCLI name spaces and commands and goes over commands for which no ESXCLI equivalent exists in vSphere 5.0.