One of my VMs is running the Windows 10 preview. Installing an OS without messing with hardware. When I am done, just select the machine and hit delete.
One of my VMs is running XP. Have some old games that won't run on 7, and the hardware requirements are low enough to run fine on the virtual hardware.
You could put Ubuntu on a VM to try it out. See if you actually like it better than Windows before making the change.
Virtualization is also a great way to browse theinternet safely
Your IP is different when you're online through VM?
Your IP is different when you're online through VM?