Virtualizing Vista On The Mac
Parallels Desktop Vista VM in Full Screen Mode (Looks just like the real thing, doesn't it?) Keyboard and mouse function as in the Mac itself -- no "right click."
Coherence creates, well, coherence between the Mac OS X and Windows environments. The Windows Start Menu is added as a dock item.
Combat separation anxiety from the OS X desktop; VMs can be run in single-window view. However, it continues to provide full accessibility to the Mac desktop.
The many configuration options for VMs allow for granular control of a virtual machine.
With VMware Fusion's single windows mode, the window is treated as any other Mac item. When minimized, it shrinks down to the dock.
Guest OS configuration options are simple and clear. USB support continues to be an issue.
In Unity, VMware's counterpart to Coherence, Windows items are listed under the Mac OS X 10 "Applications" menu.
Boot Camp is a straight-forward, dual-boot function included standard in Apple's Leopard OS.