VMware has published a fascinating white paper which goes through the resource requirements, performance requirements, suggested configurations, performance comparison between physical and virtual environments and whether or not there are licensing issues for various business critical applications.
The VMware Virtualizing Business Critical Apps White Paper
You can access the VMware Virtualizing Business Critical App White Paper Here.
VMware has also published a list of worldwide partners who have specific domain expertise in virtualizing business critical applications. That matrix is below.
More information on virtualizing business critical applications can be found at Blogs.VMware/Apps/
Having successfully virtualized all of the low hanging fruit in its customer base, VMware has now put a serious focus upon virtualizing business critical and performance critical applications. That focus includes not just highlighting progress to date, but also working with partners who have specific domain expertise is specific applications.