Dale: If your dishwasher performance is bad, there can be a lot of reasons why. What make/model is yours? Factors affecting performance (aside from detergent and its state of freshness, as you noted) include incoming water temperature (it needs to be 120-140ºF, and for my D&M, hotter is better), filter design and cleanliness, making sure the water pressure is sufficient so that it gets a full fill, making sure spray arms turn freely and the jets are not plugged, and so on. Let us know what you have and we might be able to help you out.
Bob: That's neat about the detergent cup--I hadn't thought of that

I need to get the rinse-aid dispenser to stop passively barfing Jet-Dry, and then we'll be good to go.
What isn't pictured are the cereal bowls and glasses that are hiding under the big bowl and the colander in the bottom rack, so I made sure to flex my BobLoading muscle ;-) The only thing that isn't "nested" is the saucepan in the lower-left, because the tines are so numerous and closely-spaced that it was just too pissy about fitting anything underneath.
Oh, that's another thing. Try fitting a jelly roll pan in the bottom rack on the far left or right. The 1/2" distance between the rack wall and first row of tines forces everything to bend inward, and then you're hosed. Grrrr. I wish they had made a more spacious layout.
I have to be careful with putting glasses in the bottom racks of these machines, though, unless they are very thick-walled--I've lost many an item to the patented "blast-and-bump" washing action.
Terry: How cool! I wonder what year this one might be? You're very welcome--just a little bit of clean dishes for holiday mirth :-D
Robert: LOL I will cut a Plexiglas door for this one and video it. I have to admit I'm intensely curious myself! And yes, that's two full physical detergent cups, not two measuring cups of detergent

(though, with our hard water, the difference might not be that great...)
Greg:

I love the gray racks too--I'm used to the butterscotch yellow that came later. That idea about filing the cam is EXCELLENT, though I'll have to work up the chutzpah to do it. I'd swear I remember my grandmother's 1983-ish D&M Kenmore with the Water Miser/Pots&Pans/Normal/Light/Rinse&Hold/SaniTemp/HotDry/CoolDry bonanza as having a spot in Pots&Pans where it would hang-out in the middle of the Light wash cycle and sit forever to heat, but I could be wrong. That Sani Heat option would be so much more appreciated in the wash than in the rinse.
We have some über-icky dishes accumulating that will feature the finest in dried-on soils, so I'll have to give it a whirl and report.
I'll try to go after the Jet-Dry dispenser--I think I know where it's leaking and what it will look like, and I'm already unmotivated to fix it. But, I need to repaint the unit anyway, so I may as well investigate. And thanks for the encouragement--there's nothing quite like taking comfort in the knowledge that it's bad now, but could be rendered completely dysfunctional and impossible to replace ;-) ROTF
I will keep an eye out for one of those Danbys! They sound like loads of fun.
Is the au gratin bet nullified if I mod the cam on the timer? ;-)
Can I call it a nip of Arbor Mist instead?
Mike: Yes, the top-rack moves through water pressure alone, and a very freewheeling bearing in the middle. Bob's description was spot-on

It is a very substantial unit--and quite fun to heave around across Saltillo tile grout lines (argh!)
I find that my rack spins at about 80-100 RPM--that's how fast I've clocked it when the door opens and it's just spinning down from being powered by the wash tube underneath. We're all amazed that it doesn't break things. When the dishwasher stops to drain, you can still hear the "whoom-whoom-whoom-whoom-squeak!" of the rack still spinning away.