I am always looking to improve presentations.  A major part of the work we all do is give presentations.  I wanted to share some of the resources that I am looking at constantly.

Presentation Zen Blog - http://www.presentationzen.com/presentationzen/  - Gar Reynolds' ongoing monologue about excellent presentation best practices.

TED - www.Ted.com - 20 minute presentations about some of the most interesting and eclectic issues and topics of the day.   

New http://talk.presentationsroundtable.com/ - Podcasts about presenting.
 
These are all great resources on improving your presentations and presentation styles.