Video hosting

Selecting the platform depends on your needs for sharing (bandwidth) and access control, and the budget.

Some candidates:
http://www.ooyala.com/
http://aws.amazon.com/cloudfront/
http://www.brightcove.com/
http://vzaar.com/
http://www.kyte.com/
http://www.youtube.com/

Among services that can not be used for business purposes due to their terms of service or technical reasons are Vimeo and Flikr.

Samples:

Youtube

vzaar:

Vimeo