I was going to mention this in a nearby thread that is already discussing a scripted process for DeShaker from within Vegas, but thought it was significant enough to warrant a new thread.
DeShaker has a new version, 2.2, with some improvements over the already-excellent v2.0. You can get it
here. To me, the most significant change is that it is now multithreaded, which should make it much faster on a multiprocessor machine.
EDIT: For some reason version 2.2 is not opening up on my version of VDub (v1.6.16).