Every so often I purge emails from my inbox that I no longer use much anymore. Groupon got to that point. I started to feel like none of them were targeted towards me.
So I unsubscribed and found this screen.
Of course, I had to click to find out how to Punish Derrick.
A funny animated gif played where he got some coffee thrown on him, and then they invited me back.
It's a great example of how it should be done. One click unsubscribe, a funny little video, and an offer to join again. I almost did.