Online Examples of Killer Keynote Presentations?

Almost everything I've learned about graphic design (not having studied it formally), I learned from John McWade's Before & After articles at www.bamagazine.com. Some of his articles are offered free on his site or at others such as istockphoto,com. Look for his article #668 "Picture Your Presentation" for great ideas on how to give each slide great impact and avoid the ordinary.

I've given dozens of presentations as part of public outreach programs and in my college teaching and I constantly have people coming up to ask what program I used to make my presentations. My advice is to use striking symbolic images and only a few key words or numbers per slide. Just the fact that your templates are so much better designed than Powerpoint's will make our presentation stand out. Throwing in a few judicious, stunning builds (or smart builds) and transitions (the perspective and anagram effects alway get ooohs and aaahs) will add even more dramatic affect.

Anyone can clutter up a presentation with lots of visual razzle-dazzle, but paring yours down to its essential elements will make it memorable. Good luck.

I work closely with these guys for alot of high end presentations. They are all built in Keynote with footage imported in. Their show reel can be found here:
http://www.hurricanemedia.co.uk/Presentations.html

This may not be what you want, but Dick Hardt's ID 2.0 presentation is very distinctive and stylish. He uses Keynote, but mainly for the great still graphics and text support, and the style used does not involve fancy animations or transitions. It may not be suitable to what you want, but it does offer a different perspective on how to do presentations.

And, at the risk of sounding disloyal to the Mothership, have you seen Prezi? This presentation software will give you a very different-looking presentation, since it uses a completely different paradigm from the traditional "linear stack of slides" approach.