Here are a few pics, and I'll point out what I think is technically interesting about them as per our discussion:

Nikon D70, Nikkor 70-200mmVR @ 90mm, ISO 200, f4.5, 1/800, +.7EV exp comp
The D70 had maybe 7 stops of range it could handle, so I had to make a choice w/my exposure to favor either the shadow or highlights. A histogram has limited utility here. I let the highlights go which can be very natural. Even with more modern cameras that have more range, you have to make a choice. Other thing is the angle of light -- time of day, the backlit angle transforms this shot.
Nikon D200, Nikkor 18-200mmVR @ 135mm, ISO 250, f5.6, 1/80
This is all about focal length -- longer mm compressing the landscape in this case -- and trying to create depth in the frame, which is almost always a goal. This is accomplished thru composition, light and color. Would like to have gotten much further back w/a longer lens to further the effect, but wife and kids waiting in the car got impatient while daddy was lying in the middle of the road. I would encourage everybody to shoot a closeup of someone (face same size in frame) at both ends of their zoom. Note the effect on the face and the background, and how these elements interact. Shooting later in the day too would have helped too -- the road runs west (bottom to top) and shadow play along it would have accentuated the hilliness among other things.
Nikon D200, Nikkor 70-200VR @ 200mm, ISO 500, f2.8, 1/250
Saw this forming out my home office window -- would have like the subjects a bit closer so I could have blurred the background behind them some more, but they were not cooperative. Shot all the way open to do the best I could. Was looking to create depth with the foreground left tree and fg right bushes, it's all about layering -- I think it's a better picture than if framed them out. Agreed that wildlife generally looks best front lit.
RED camera rated at ISO200, Zeiss 85mm @ T2
This is a still from a movie I shot recently and illustrates (loosely) two concepts. One is Zettl's 'rule of thirds' for composition. If you divided the frame into horizontal and vertical thirds -- think a tic tac toe board supered over the frame -- your compositional element want to be along these lines. For closeups such as this, it usually means the point between the eyes roughly either the upper left or upper right 'crosshair' -- at this moment in the shot, the actor is a bit closer to center. The other notion is that the most pleasing frames contain roughly 30% white, 30% black, 40% in the middle. Our eyes/brain like contrast and it makes everything jump. Props to whoever can name the actor.