Awesome thread! One more to add to the mix...

Unitrends is now in Virtual Appliance form, and two free editions are available:

Free Edition
Protect 4 VMs (VMware or Hyper-V)
Instant recovery of virtual machines.
File-level recovery of files and folders.
Rotational archiving to disk, tape, NAS and SAN.
Automated backup scheduling with flexible strategies.
Download Free Edition: http://www.unitrends.com/unitrends-enterprise-backup/download?src=TechRepublic

NFR Edition
Eligibility: VCPs, VCIs, vExperts, MVPs, MCPs
Protect 2 sockets and 2 physical servers
Phone, email and online support
1 year expiration (renewable along with certification)
Download NFR: http://www.unitrends.com/unitrends-enterprise-backup/download?src=TechRepublic