What is the best slim-design camera on the market?

I am looking for a new digital camera that is slim, but still has plenty of features. all-weather protection is also a plus!

If all-weather is your main concern, look at the Olympus 770SW or 720SW.
http://www.dpreview.com/reviews/specs/Ol...
http://www.dpreview.com/reviews/specs/Ol...

Another company with weather-resistant cameras is Pentax.
See the Pentax Optio W30:
http://www.dpreview.com/reviews/specs/Pe...
or W20:
http://www.dpreview.com/reviews/specs/Pe...

If image quality beats out weather protection, check the Canon SD1000.
http://www.dpreview.com/reviews/specs/Ca...
or SD750:
http://www.dpreview.com/reviews/specs/Ca...

Click on "Read Owners Opinions" on each of those pages.

look into the olympus stylus 760

Take a look at the following 2 sites. They do reviews on digital cameras. Look through what they have reviewed and decide what best first your style and budget. Lots of great cameras out there. Steve's Digicams even has a link to what they consider the best cameras, one of the sections is ultra-compact. DP Review has a feature by beature comparison, one of their features is size, just pick ultra-compact.

http://www.dpreview.com/
http://www.steves-digicams.com/