His videos are about 30 minutes long. He is very thorough and discusses pretty much every angle imaginable on each subject he addresses. The only downside is that he plows through all of the information in a stream-of-consciousness method with no breaks. You really have to concentrate to take in everything he says.
Also, the production values are great as he is very popular and has some cool artists generating great video. So it's not just some nerd staring into a camera.
Yes, I’ve watched most of them. Great stuff!!!
Although he does have a tendency to reuse certain graphics over and over again, like the same O’Neil Cylinders shots on many different related videos...