I posted this same info about 3 years ago and would like to add a bit more from my own experience.
The group has some nice topics and is well worth checking out. However, note that many are backed by a corporate sponsor so may have a commerical connection to the production.
We enjoyed the videos we received, but receiving them has been extremely erratic. It's been at least two years since I submitted the original request. Over that time, various ones (not all) have drifted in, including one 3 months ago.
Let me point out that we did like the ones we recieved and that I did NOTHING to follow-up and hurry along the missing videos. So it may be a completely different story for someone else.
It's a nice, free resource, just be prepared to track your order if it's important to you.