I know I always wonder what other photographers use. So in case you are curious, these are the cameras I've been using up to this point.My main shooting camera is the Canon 40D and the newest addition to my collection (and a very happy surprise at that).
Perhaps another time I will post some of the other gear I use.
My secondary camera (and very first SLR) which I have used for 5 years is the Canon Rebel XT. It has been wonderfully faithful, even if it is not my go to camera anymore. I have kept it partly for sentimental reasons, and also because I look forward to photographing more events like weddings that almost require a second camera.