This one isn't making much progress at the moment, so if this is one you want to see in production, and you haven't already, I would urge you to place your bid:
http://www.logos.com/product/16530/patrologia-cursus-completus-series-graeca-part-1
There are twenty volumes in this set.
This works out less than $5 per volume!
Imagining being able to run a Greek search that takes you directly to the fathers (and from there to the English translations, if available)?
For those of you who read Latin, these sets come with a corresponding Latin translation.
