Garreynolds.com - A great place to start. Garr has all kinds of great tips, this page outlines his top tips for designing & giving presentations

43Folders.com/Merlin Mann - Great page to see how someone gradually improved his presentations over time, and what resources and inspiration he used to do it

Duarte Design - Great designers, did a lot of the work for TED presentations. 5 great, simple tips

Presenation Zen - One of the best, if not the best, blogs covering presentation design

Wired - Presenting Like Al Gore - Tutorial at Wired site talking about how Al Gore’s famous global warming slide show was designed

Really Bad Powerpoint - Tips from Seth Godin, also available as downloadable pdf reference guide

BusinessWeek - Guide to putting together a presentation modeled after Steve Jobs - 5 easy tips

Beyond Bullet Points - Cliff Atkinson’s site dedicated to presentation storytelling. Interesting approach, downloadable templates useful

Sliderocket.com - An up-and-coming online provider of pretty slick presentation software

Slideshare.com - The most popular site for sharing presentations online...a good place to find inspiration

Compfight.com - Need free quality images? A search front-end to Flickr where you can search for creative commons images

iStockphoto - Willing to pay a couple bucks for the perfect image? This is the best place I’ve found for a huge library at a reasonable prices