Free Webinar resource
I'm using ambiguity on purpose here. HumanResourceWebinars.com is not only a free resource, but many of the Webinars listed on the Website are free as well.
Some of the listings might be too HR-y for trainers (for example, Introduction to Workmen's Compensation Claims), but there are others that look promising, such as a Webinar on Developing Women Leaders (January 6th, free) or the Thought Leaders Interview with Marshall Goldsmith (January 10th, free).
Archived Webinars are available for a fee.