I've got one.
Normally, I'm a die-hard Nikonian, shooting with a D200 or, if nostalgia takes over, a F4E or F5.
But Nikon doesn't have a P&S with complete manual control and the possibility to shoot RAW. I would never shoot JPGs with a DSLR, why should I have to with a P&S?
So, for P&S purposes I had to go Canon. I bought a G3 in 2003 and "upgraded" it with a G9 a couple of weeks ago.
Build quality is very good, functionality is very nice (e.g. one manual rotation knob for mode selection and one for ISO change!), big LCD with enough information and a live histogram; image stabilization, full manual mode as well as aperture priority and shutter prority mode (I don't like program or automatic modes), can shoot RAW or JPG.
Shutter delay and picture quality aren't quite at a DSLR level, of course, but that is no surprise. It still lets me make good pictures. :righton:
Here's a quite thourough review:
http://www.dpreview.com/reviews/canong9/
A lot of questions you might have are dealt with in the Canon forum there:
http://forums.dpreview.com/forums/forum.asp?forum=1010
If you decide to get one, by all means treat yourself to the custom grip and the thumb rest, they make all the difference in handling:
http://www.lensmateonline.com/newsite/order_G7_1.html#rf
Don't hesitate to ask further questions here.