The virtualization story for Mac OS X is about to change dramatically, and for the better, as Lion's licensing changes the rules for virtual machines.
For some enterprise deployments, virtual Mac OS X environments are the Holy Grail: giving access to Mac-only applications on demand without having to supply Mac hardware on a one-to-one basis. While the vanilla version of Mac OS X has been theoretically virtualizable since the Intel transition (and in fact can be run on a virtual machine now under the right circumstances), th