Larry,

there are several great cameras that allow you to swap lenses. Sony, Nikon, Olympus, Canon, Panasonic, etc.

http://www.dpreview.com/articles/0344780582/mirrorless-cameras-a-primer

Lots of detailed reviews on that site too. Also, any of the high end P&S cameras that shoot RAW format. Canon G15, etc.

Here's a panoramic (stitched together on camera and saved as jpg) off my Sony NEX-5. Images shot in RAW format and not swept by hand come out much better.