Not sure how to write this without sounding the gushing Fanboi, but I’ll give it a shot…
Hal Rottenberg, in combination with TrainSignal have released “VMware vSphere PowerCLI Training”. To give you an idea as to how much awesome is packed in there… Hal is the author of the first Managing VMware with PowerShell books on the market. Hal has also been featured in the TrainSignal vSphere Pro Series, blogs on all things PowerShell, and, oh yeah, is a Microsoft PowerShell MVP.