What's significant about these examples is not so much the new opportunities they offer students, though there is that. It's that all of them redefine the educator's role in some significant way. They create entirely new categories of educator, such as "online lecturer" or "scientist studying polar bears". Entire disciplines, far removed from traditional "instructional design", are being created and populated by people who direct online videos, design learning communities, program massive games like Evoke. And they create new categories of roles and responsibilities for in-person educators.