From Andy Tucker's blog:
"This is Solaris 10 Update 1, plus the Studio 11 compilers, plus all the Java Enterprise System software - app server, web server, directory server, etc. - all in a VMware virtual machine. No OS or application install, just download and untar, fire up VMware Player/Server/Workstation (take your pick), and power the VM on."
Highly recommended by myself as making a Solaris virtual machine isn't difficult, but can take a pretty long time, and even longer to configure properly.
Thanks, Sun!