I just got an email from dancevision, which has some brand new Argentine Tango instructional DVD's for sale. They're advertising the DVD's as tango "syllabus" videos. Huh? Is there such a thing as a tango syllabus? And is learning from video a good idea? Watching videos for entertainment or ideas, sure, but I've always thought that, or all the dances out there, Argentine tango is one you absolutely MUST learn by feel. What do you think?