Pecha Kucha is the way forward.
With Pecha Kucha, Japanese for chatter, presentations can consist of a maximum of 20 slides each lasting no more that 20 seconds. That's a total of no more than 6 minutes and 40 seconds for a presentation.
This ensures that a presentation is concise and not full of unnecessary fluff.
The audience interest level is maintained, no more sleeping through presentations, and gives more people the opportunity to present.
If you want to see Pecha Kucha in action come along to CMSExpo in Denver where all new product launches will be strictly Pecha Kucha.