Virtualization has arrived. My linux desktop with Windows running under a VM is the first, productive desktop I environment that I have had for years. Namely, inspite of the fact that Windows clients are mandated for Corporate reasons, Windows simply does not supply the tool sets I need for my regular work. Now, I can run a linux desktop and switch to Windows when Corporate needs mandate...
At the last LinuxWorld vendor expo, I lost count of the number of VM related vendors and products.
Virtualization is a great tool, but can lead to some interesting challenges. Problems can include cost accounting (measurement, allocation, license compliance); human issues (politics, skills, training); vendor support (lack of license flexibility); management complexity; security (new threats and penetrations, lack of controls); and image and license proliferation. See: Virtualization Is Not All Roses [slash.dot]