What makes them compelling?

Experiences and approaches from your trail guides.

See the examples of Connected Course taught in different modes and technologies presented as "The Open Show" at the 2015 DML Conference.
Also see the recent ones taught by Ken Bauer he has taught in a syndicated mode at the Tecnológico de Monterrey, Guadalajara, Mexico.
Look for a more extensive list in an open Google Doc of connected courses -- if we are missing yours, please add it!

The Lookout by Frecderick Remington: Public domain image from Wikimedia Commons
CCK08 screenshot from The MOOC Guide
Animated GIF created with Giphy GIF Maker from the YouTube video of How The West Was Won (1962 movie trailer)