James Govenor pointed out a connection between my blog about Interesting Moments and Kathy Sierra's blog on Is it Interesting? (see also her discussion of the tie-in). Her angle is about engagement and delight.
Also, Joshua Porter from User Interface Engineering pointed me to an article by Jared Spool from back in 2002 on The Search for Seducible Moments.
As a parent I learned a long time ago there are times when a person is especially receptive to learning. These are called Teachable Moments. If one is prepared for those times, more can be accomplished in a few minutes that a lifetime of nagging would ever accomplish.
Putting these thoughts together, we should look for the interesting moments of interaction that open the door for us to seduce and engage our audience.
I have written about some of these moments in general. Like the thought of providing an invitation to the user through lightweight events (like hover). Getting users to review a movie by making the interaction with the movie rating control fun and engaging is one example.
I am curious, what sites, products or features have you found engaging-- or even seducing?