Issues with my tomato plants

So I have been bed ridden for almost a week.  The tomatoes were having issues prior, but in this week they have gotten really bad.  Now mind you, the upper 2/3 of the plants looks good, and they are all loaded with unripe fruit.
 

 

 

 
I have some pepper issues as well in another post.
http://thehotpepper.com/topic/54120-most-of-my-plants-look-great-some-have-issues/
 
What could it be?

looks to me like tomatoes just doing what tomatoes do.....as the plants grow they direct more energy to new growth and the lower branches sort of get shut out and eventually wither and drop off.  Being closer to the ground they pick up more soil borne pathogens from rain spatter which speeds up that process.  Also, once a sucker forms at the base of a branch (which are clearly visible in your pictures) the plant will direct its energy towards growing that sucker instead of sustaining the branch just beneath it - that's just how tomatoes grow.
 
Now, sometimes those pathogens really get a good hold and will spread up the plant causing trouble and will tend to do so more in very foliage dense plants where there is more leaf-to-leaf contact and leaves remain damp or dry out slowly after the morning dew.  Spotty, discolored leaves are also ugly, so if you want to avoid them there are a few things you can do...
 
first, get some sort of mulch down around the bases of the plants - hay is very good at preventing rain from splashing soil up onto the plants.
 
second, strip off the lower branches altogether - once my plants get about 3 feet tall the bottom 18" or so get stripped bare.  this prevents the bad stuff in the soil from reaching the leaves and encourages more air movement around the plants which helps them dry off quicker.  if that bare space and naked stems look weird you can plant basil between the plants to fill in that space.
 
third, pinch off those suckers or allow them to create a single set of branches then pinch the growing tip off right above those branches - this will help keep nutrients flowing to the existing branches but still allow the plant to add new, fresh, energy-producing leaves.
 
finally, thin out any sections of the plant that are overly-dense - tightly-packed and shaded leaves won't produce as much energy because they won't get as much sunlight and they will inhibit airflow around the plants, keep them wetter longer after rain or dew, and encourage the spread of disease.

That could be bacterial leaf spot.  If it is it will be an issue; we got it and it wiped most of the plants in that bed out at/shortly after first fruits were harvested.  I try to pinch all lower leaves to keep dirt/fungus/etc from splashing up on the leaves - dirty wet leaves usually causes problems w tomatoes.

I agree with the pruning posts. It looks like common blight caused by too much moisture, lack of wind and sun in that area of the plant. It probably won't affect things much unless it gets outta control.. If you want to reduce, hack back all those lower leaves and suckers. This allows the air and sun in. Tomatoes grow so fast, they tend to choke themselves out.
 
I prune mine like mini-palm trees and they still grow like crazy. This has to be done several times each season, or I get leaves, and lower tomatoes, like yours.