José Romaniello is doing progress in hql intellisense for Visual Studio 2010. He manage to integrate some NHWorkbench codebase into it, to have some intellisense working. Even if the project is still in alpha, I suggest you to download and install to give it a try.
Here below a screenshot of the tool at work:
Nice, isn’t it ?
As an addition I was added to the project by Josè, and I would be happy to add some contribution to this important project for the NHibernate ecosystem.