I may have missed it....but no one mentioned the canon digital rebel xt
i just got one myself, and i am in love. its lighter than my canon eos elan 7E and a tad bit smaller too. Its 8.1 megapixels and as far as i can tell does everything i need it to do.
its so much smaller and easier to hold then the nikon d100 and the bigger canon.
For my trip coming up i am taking both my digital rebel and my nikon coolpix point and shoot. it will be a big change since on both my last trip to europe and my trip to brazil i took my 4 x 5 camera with me.