How cool are these subject lines?

Sometimes in my job I get really excited about an idea. These two subject lines I encountered recently made me smile and my brain exploded with possibilities upon viewing.

First is from Jeep and shows off their iconic grill via ASCII symbols. The second is ThinkGeek utilizing hex color codes which is spot on the nose for their audience.

These two brands also epitomize passion and man, are their subject lines some of the coolest ever!

What are some other really cool subject lines that have made you think “I have got to open this right now”?

Kelly

Ps. Hat tip to Apsis CEO Anders Frankel for the Jeep example.