Baking multiple objects with seperate maps at once? Are there any scripts or add-ons to bake maps for several objects at once? 

For example, could you select a list of objects for the low poly and another list for the high poly then export a series of normal and any other wanted maps for each of those objects?
Cycles:

Bake Tool offers support for high to low poly baking of multiple objects. Set it up one object (high poly) and target (low poly) per job. Use multiple jobs for each additional set of objects. Bake Tool can also be used for baking multiple maps in BI. (This is helpful for displacement map baking.)

Meltdown also offers similar support.

As of version 2.78c, Bake Helper does not support high to low poly baking.