Richard Garsthagen over at Run-Virtual created another nice tool. VMjuggler is an application Richard wrote to use during demonstrations. The program is quite simple, it connects to VirtualCenter 2.x and you can select a VM and 2 hosts. After selecting this you can start the VMjuggler and the VM will be moves every 10 seconds between the hosts. The VMjuggler has been added to the vm4all.com website.