I don't have any experiences hosting videos besides Youtube, Google, Revver, and Metacafe, but here are a few hosting services geared for private sharing:
I think Imagestation has video hosting features too if I recall correctly.
Hope that helps.
Here's a delightful little Christmas video on why you should use Revver:
Frankly I don't find this comedy troupe's videos funny, but there are some that do. Enjoy!