Yeah the consolidation planner is the only free tool I know of that comes with Vcenter (I think its only available when in Eval mode)
Otherwise VMware Cap Plan you have to do a c2 day course to get hold of - a VAC can do this for you, sometimes free of charge.
Otherwise I would recommend using Platespin Recon, but again you will get most value out of this with a consultant as the results can be spurious.