i love creating and delivering presentations more and more. especially when two main contexts combine.
First, when the presentation is actually supposed to deliver the work and energy of an entire team, not just of the presenter. therefore, the easiest way to create an energetic presentation is to get everybody engaged and excited about it. to give people an interesting shape to play with, and get them playing. An unusual format, an interesting overall concept, anything that allows people to add their own bits and pieces, to add up to the whole. somebody in the client service might have collected blog posts and flickr sets related to the brand, some creative might have some great skills at editing and remixing mood videos, some designer might have gathered strange fonts and bottle designs...i think the greatest thing is to join all this, let it grow, and constantly have the team connected to the way the presentation is shaping. Then the final presentation will not be delivered by indivuals each presenting his/her own piece of thoughts, but by a bunch of people who are so excited about the idea they've been giving life to, that they'll come with various straight to the point perspectives to shed light on the idea. it's amazing what good vibe during the "making of" a presentation does to the final act of actually delivering it, especially since the final presenting team accumulates energy from all the people involved in the process.
Second, when the audience you're presenting to is very challenging, because they're most likely not be familiar with the idea's conceptual universe. i think it's precious when you have to create such a proper context that everybody gets it, even though you're taking them completely by surprise, telling them stuff they're only vaguely (if at all) familiar with. engaging them in your game, making them relate and contribute themselves to the points you're making, exciting them about your challenges and your ideas is very rewarding to me.
and that's why i am seriously thinking about more and more instruments that would help creating better, more interactive and spectacular presentations.