NFS with VMware

I came across this blog post, and it piqued my interest.

http://blogs.netapp.com/virtualization/2009/02/mythbusters-nfs.html

It briefly suggests that NFS is a viable alternative for VMware instead of SAN. I don't have the resources or clout to try this, but I'm curious to how well NFS would work. This information could potentially be useful for people that don't use NetApp also.