Check out the National Consortium for Data Science "DataBytes" Webinars, available at:
http://data2discovery.org/databytes-webinars/
The webinars are held on the first Wednesday of every month, excluding July.
According to the NCDS site, DataBytes is "an NCDS-sponsored lunchtime webinar series that gives our members and the larger data community the chance to discuss the most pressing and interesting issues in data science. "
