VirtualBox - I love it
By Stewart Townsend on Sep 04, 2008
Virtual Box 2.0
Sun xVM VirtualBox 2.0.0 was released today, and is available for download from virtualbox.org. New features include 64-bit guest support, host interface networking on Solaris and OS X hosts, support for nested paging on modern AMD CPUs, and a native front end for the OS X client (and a move to Qt 4 for the others).
More detailed changelog here.