John Mueller, a Google Webmaster Trends Analysts in Zuerich, announced on Google+ that the Google team has hosted over 100 webmaster related Google Hangouts this year.
Wow, a hundred in just about 8 months! That is a lot, figuring that most hangouts last about an hour. That is a lot of time put into just hangouts.
Many of the more recent hangouts are done as live hangouts and available for viewing at a later date. I believe Google is doing about 2-7 hangouts per week now, specifically for webmasters and in tons of different languages and times.
I'd recommend you follow John Muller on Google+ to be reminded of these hangouts.
John asked on a Google+ thread for feedback, he asked:
How do these types of office-hours hangouts work for you? Are we hitting the right times, answering the right questions, giving you the information you need to make awesome(r) websites? How might they be made even better & more useful?
Forum discussion at Google+.