Nice review of SCVMM over at ZDNet.co.uk - http://reviews.zdnet.co.uk/software/enterpriseapplications/0,1000001814,39352978,00.htm?r=3

"We had very few problems putting Virtual Machine Manager 2007 through its paces and were impressed with Microsoft's first offering in this area. The next release, with its ability to manage Hyper-V and non-Microsoft platforms, should be even better and is likely to be a must-have for anyone concerned about VM sprawl."