What the !? (Or is it: What the ?!)

The Interrobang is a combination of an ! and a ?.  It was designed by New York ad executive Martin Spektar because "he was looking for a way to express astonishment, and disliked the clumsy combination of ?!" (page 268). 

 ~ From Just My Type:A Book about Fonts by Simon Garfield.

 Here are some variations on this theme:

I really like this.  I wish it had caught on more.