VMware customers really seemed to dislike the way the new Storage VMotion feature has been implemented in VI 3.5.
virtualization.info had feedbacks about several scripts and web interfaces to simplify its use, and just a couple of days ago we posted a GUI for Windows from Alexander Gaiswinkler.
Andrew Kutz went even further and created a plug-in for VMware VirtualCenter 2.5.
Several users are reporting it works well even in production environments. Download it here.
As side note this is the very first 3rd party (and totally unsupported) plug-in for the new modular architecture introduced for VI 3.5 management.
Andrew achieved the goal using reverse engineering techniques to understand the VirtualCenter internals.