Charting the opportunities of multimedia presentation....

....I like this one by Lynette Webb..an interactive chart that could be updateable like a wiki. (If you follow the link to the original you will see that you can roll over the datapoints, and Lynette asks for people to submit data as it comes in).

It also plots Flickr's hockey-stick in mirrorvision...

For those who are Powerpoint-weary yet get fed up with the vacuity of the "loads of media and fanny all content" approach, this is quite a useful take on gettinng data across.