OK, I gotta be honest. When I heard about this idea I was perplexed. But there are few things I won't try at least once.
On my last trip to OK, I heard about marinated chicken in pickle juice.....any kind: dill, sweet, I used bread and butter. Just marinade the chicken a good part of the day. No recipe.
When I got home, I did a search to see if this was a legitimate idea and was shocked to find uses for leftover pickle juice. I do loves me pickles and always have several on hand.
One tip: I served mine over rice and ended up drizzle a bit more juice to "flavor-it-up" and served it with more pickles. Another idea: Take a jar (or so) of pickle juice and reduced it down about half-way to deepen the flavor. Of course your house will smell like a vinegar factory, but the results will be worth it.
See the other neat ideas for using leftover pickle juice at:
or just put in a search "uses for leftover pickle juice."