I have found a great food stowage method that works great for me.
More info on my blog:
http://www.myfjcruiser.org/1200
I use a couple of these containers, but I don't use that many due to the fact that they take up more space than the food they contain. There is always going to be some wasted space.
There are many pros to using these though:
1) ease of access to your items
2) prevents leaks to keep your fridge clean. The lids really lock down tight on all four sides and they have a silicon gasket.
3) containers are quite durable
4) easy to see what's inside
In the end, I've resorted to double or triple bagging everything with freezer zip-lock bags. I can get more food in there using this method.