I have to try this one.  I love rye bread. It is really the only bread that I eat since I try to avoid wheat breads.  As a former New Yorker I agree with Kalya on the caraway seeds. 
I sometimes buy a bread from a small commercial bakery called Bohdi's they call it wupper light. it is a combination of rye and lupin.  similar tasting to rye bread but a bit heavier. It has a fairly high protein contenet from the lupins.