Originally posted by StreetShooter
Some REAL answers:
Canon D60 uses Canon EF lens system, which is slightly cheaper than Nikon equivalent, and uniformly compatible across the range. It uses a CMOS sensor, which supposedly gives a "cleaner" less noisy image, and is also prone to less dust problem (CCD apparently attracts more dust). The more expensive Canon lenses are also supposed to be slightly better optically. The main complaint about the D60 is relatively poor autofocus in low light conditions.
Nikon D100 and Fuji S2 Pro are Nikon systems. If you already have Nikon lenses or a Nikon SLR system then these would be logical choices. S2 Pro supposed to have some image quality problems. D100 is based on F80 body, I think, which is supposed to be a cheaper consumer body.
If you do not have any SLR lenses at the moment, take note that there are third party equivalents (eg Sigma, Tamron and Tokina) for both Canon and Nikon mounts, so you can build up a competent system for any of these cameras fairly cheaply if you are not too much into brand names. But the resale value of third party lenses are pretty poor.
The facts about the D60 are accurate as far as I know. The stuff I mentioned about the Nikon system is merely hearsay, since I'm not familiar with Nikons in general.