I have recently upgraded to a 5D, but I want to commemorate 3 very happy years with my 10D.
Although the D30 and D60 are older, the 10D was the camera that made dSLR photography within reach of amateurs. I had never owned a film SLR, so I had a lot to learn. The 10D let me takes lots of frames, and with the help of auto-exposure some of even them got printed (I have found the 6 megapixel resolution is good up to about 8*12).
I won't sell my 10D, instead I will keep it around for time-lapse.