Judging by the EXIF data, those pictures were taken with a Canon 20D and edited in Photoshop CS2.
The lenses used are just about as important as the body, but the lenses aren't listed in the EXIF data. Most of the pictures were taken with a focal length of 85mm including one with an aperture of only f2.5. Because of the low aperture, I suspect it was an 85mm prime lens. The others ranged from 19 to 40, so I suspect the shooter might have used either the 18-55 kit lens or a 17-40. The fact that one is exactly at 40mm leads me to believe the latter.
Judging by the saturation levels in the photos, it looks like the shooter either shoots JPG with the saturation turned up or has increased the saturation in their post processing. I suspect that it is the vibrance of the colors that the prior poster finds so appealing.