VEEAM and Vizioncore (vRanger) both have a feature in their newest backup products that lets you “instantly” restore a vm, so users can get back to work on the machine right away. Both technologies spin up a vm from the backup right on your backup media. You dont have to wait for anything to be copied back across the network. Sweet!
http://www.veeam.com/go/vPower?ad=backup
http://vizioncore.com/sites/default/files/Flash%20Restore%20Datasheet.pdf