Pecha Kucha

I recently came across 'Pecha Kucha' (usually pronounced in three syllables like "pe-chak-cha") which is a simple way to execute engaging presentations - the rules being that you can display 20 images for 20 seconds each. That's it - the presentation done in 6 minutes and 40 seconds. Some more links here:
http://www.pecha-kucha.org/what
http://www.wired.com/techbiz/media/magazine/15-09/st_pechakucha
http://en.wikipedia.org/wiki/Pecha_Kucha

I was wondering if this could be adapted to preaching - specifically to our evening lectures. Recent presentations that we kept to 20 minutes went down well, I wonder if we could use this format and have 3 (or may be 4) presentations on a sunday evening? What do you think?