Explain Everything - Explain Everything is an easy-to-use design, screencasting, and interactive whiteboard tool that...
Spectacle V0 (previously Startup-Videos) - Showcasing the best startup videos
Microsoft Whiteboard - The canvas where ideas, content, & people come together.
Bloc.io - Learn to code and become a web developer in Ruby on Rails, HTML, CSS, Javascript, and jQuery in Bloc's Intense Online Web Development Apprenticeship.
Conceptboard - Instant Whiteboards for Teams & Projects
Sandwich Video - Great videos about great products.