Dave Gray, in his blog, points out an interesting use of comics as communication: personal productivity.

Avi Solomon has been using comics to review his life, identify common patterns and plan future events. Avi is using his 'life storyboard' in a more philisophical and retrospective manner, but it's easy to see that such a system could easily be applied in place of a to-do list or personal planner. No need to throw out your present planner. The D*I*Y Planner site already has a template available.

If you're a visual learner, it's clear the advantage of a comic-based planner as opposed to the typical lists and bullet pointed action items.