Episode 38 is out -- Accelerating Virtual Machines and it has some good information about WAAS (Wide Area Acceleration Services) and VN-Link, which delivers virtual machine-aware network and storage services. The video is below, but they also have a YouTube channel for previous episodes/videos.
Cisco WAAS technologies are pretty cool and I think you'll see that product line grow pretty fast for them. A video on this WAAS page at Cisco gives an implementation case for Monsanto. It's a nice video, but I have two problems: they mention Iowa twice as if it is connected via 56k modem at best (so VERY not true btw); and the solution pairs WAAS with Microsoft Share Point. I have never been much of a Share Point fan, but (Ben - don't read this) -- it is growing on me. It has it's purpose and the product line has certainly evolved since I used it last.
Finally, itWorld Canada has a story on Cisco WAN Optimization and "dramatically shrinking" replication times between company data centers.