Gavin Joliffe has been hard at work building http://www.xtravirt.com into a fantastic technical resource and is updating it with technical tips on a regular basis. Some of the latest stuff includes :

• How to import an ESX 3 VM to an ESX server (just using the ESX host and the Virtual Infrastructure client GUI)
• Script to configure ESX vSwitch network load balancing using vimsh
• Mount a windows share on an ESX3 host
• View devices connected to your ESX host at the command line

So go and take a look at it, and thanks Gavin for the tips!