A few years ago I was at a lecture given by Pentagram's Harry Pearce, formerly of Lippa Pearce. He spoke about many aspects of his design career but it was his relationship with the late Alan Fletcher that stood out for me. It was Fletcher who influenced Pearce early in his career and led to Pearce's fascination with visual puns and typographic experiments.
This has been an almost lifelong creative endeavor for his own personal satisfaction(see above) mostly but Pentagram asked Pearce to design their 2007 holiday book Decipher. Saks Fifth Avenue seen this holiday mail out and commissioned Pentagram and Pearce to do something for their holiday catalogue (below). You can read more about it and see all the conundrums here.