Absolutely go check them out somewhere. I actually preferred the feel of the Nikon vs. the Canon. The Nikon Ds are bigger than the Rebels. Actually it's not so much that the Nikons are big as much as the Rebels are compact. For me though I knew my wife would use the camera about as much as I would and I knew she would prefer the smaller design of the Canon. The main difference you'll see between the cameras is the Megapixel difference, but don't let that fool you. More MP do not necessarily equal better quality. Each camera has it's own strengths and weaknesses and there are plenty of reviews available online to educate yourself with. I've been very happy so far with my Canon Rebel XT. It's not a perfect camera but it's enough for a hack like myself. The lenses are where it's at. Save your money for some good lenses.
One thing I noticed when demoing these cameras was that the Nikons need a card in the camera to actually take a picture. The Canons can be set to take pics to it's internal memory. So when I went to the stores, the Canons were able to take pics and the Nikons were not. While I knew this to be case, it still bothered me that I couldn't just pick up the Nikon and take pics. I have to admit, it did play into my decision to buy the Canon.
One thing I noticed when demoing these cameras was that the Nikons need a card in the camera to actually take a picture. The Canons can be set to take pics to it's internal memory. So when I went to the stores, the Canons were able to take pics and the Nikons were not. While I knew this to be case, it still bothered me that I couldn't just pick up the Nikon and take pics. I have to admit, it did play into my decision to buy the Canon.