Whats up guys!? Sony gets no loving! I am surprised this far into the thread nobody mentioned the Sony DSC-R1, the one camera that had the DSLR benefit of APS sized imaging sensors, and the counterpart - Zeiss top quality lens. Best yet, it even had an advantage in many ways with its incredibly short backfocus, in some areas such as distortion and aberration it outperformed SLRs with even mid to top range lens even. The R1, manufactured in 2006, is the closest a point and shoot has ever gotten to SLR. and it still holds that crown.
There are a handful of people that think that Canon and Nikon are the only Camera companies in hte industry, namely the only ones that produce anything good. But really, there are plenty of other manufacturers. Neither Canon nor Nikon has produced a prosumer that can even come close to the performance levels of the Sony DSC-R1...
Anybody that is wanting the image quality and slr performance in a non-SLR, you can't do better than the R1....