I have to admit that I've never seen anything by Sellers and really don't know who he is. I took instruction in woodworking at my local community college and found it excellent. The instructors were all very good and the things they taught had been vetted through many classes and were safe practices. My own opinion is that once you have the basics, the rest is up to you. You need to build stuff and try to make each project better.
I also agree that the thing that distinguishes a woodworker as "excellent" is the design aspect. Many, many people can learn the techniques of woodworking, but it seems that very few people can produce furniture designs that are pleasing and functional. I don't know how you can teach design, however. But what looks like a flash of creativity is usually the result of many iterations of a design, and evolution of an earlier design.
And just a side note, I just HATE DVD instruction. I'd much rather have a book with pictures. Most of the time, I only really need to reference a part of the instruction and finding that on a DVD is usually very difficult. I get very impatient listening to the instructor go through things I already know how to do. And most of them talk way too much - blah, blah, blah.
Mike
Go into the world and do well. But more importantly, go into the world and do good.