Best Infinity Cover Ever?

Mike the Barber had two large mirrors that faced each other on opposite walls and, when I was a kid in the barber chair, I used to how many reflections deep I could see. 

Every once in a while a comic book is published with a similar theoretically-infinitely-repeating  pattern. Sometimes the design works well and sometimes it falters. The cover to 1947's Whiz Comics #91 is the most successful infinity-design I have ever seen in comics.

Or maybe you can tell me one you like better?