A very interesting MIN-MAX concept in communicating (Minimum content, Maximum Impact), 20 slides x 20 seconds per slide. The concept is amazing drives you to the brink of creativity and forces diligence by including only those visuals that are absolutely needed.
Pecha Kucha - is Japanese for chit-chat (WIKI about the idea)
Everyone needs an elevator pitch, PK is the elevator pitch or a one pager for the communicator!