I love the coupon site Groupon and happily subscribe to receive their DC deals via email.  However, at some point I accidently subscribed to receive updates on Chicago deals through one of my secondary email accounts.  This morning I got an email offering 50% off tickets to a Bon Jovi and Kid Rock concert in Chicago, and decided today was a good day to unsubscribe.  I clicked the unsubscribe option from the email and was immediately taken off the list and presented with this page. 

Naturally, I immediately clicked on the Punish Derrick link, launching a Flash movie in which Derrick gets a cup full of coffee thrown in his face.  At the end of the video, they ask me to resubscribe (see below).

This is really clever.  First, they make the unsubscribe process easy and entertaining.  Second and more importantly, they smartly try to reengage with me in an effort to get me to stay.  I was tempted to stay on the list to reward their cleverness, even though I have no use for Chicago deals.  Well done Groupon.  That’s how it is done.