Power Man and Bumblebee

One thing I really miss in today's comics are the inventive subscription ads and series advertisements.  They often featured cool art that could not be found anywhere else.  Who can forget the two ads by Bill Sienkiewicz for Power Man and Iron Fist - one with Danny Rand asking the reader to subscribe to their series so as not to upset his partner and the other with Luke Cage daring the reader not to.