The Interactive Media & Game Development (IMGD) program at WPI has been running a weekly speaker series for the past few years, open to the public.
Recently, they began to video record the talks, and they post them online.
And if you have something interesting to talk about, they are always looking for speakers. You can get an idea of what types of talks have been given by looking at the site. Links to talks from previous semesters are near the bottom.