VMware vSphere Podcasts:

www.ntpro.nl has a very nice list of podcasts I think you will want to hear.

What's New in VMware vSphere Part 1: Overview

What's New in VMware vSphere Part 2: vSphere Editions

What's New in VMware vSphere Part 3: Platform Efficiency and Performance

What's New in VMware vSphere Part 4: Hardware and Power Efficiency

What's New in VMware vSphere Part 5: Operational Efficiency and Network Management

What's New in VMware vSphere Part 6: Control of Application Availability

What's New in VMware vSphere Part 7: Control of Application Security

What's New in VMware vSphere Part 8: Control of Application SLAs