From 1939 to 2001, Jim's Original was a mainstay at the once bustling corner of Maxwell and Halsted Streets, but the expansion of the University of Illinois-Chicago ultimately pushed it from a rapidly-changing neighborhood.  A purveyor of juicy and delicious polish sausage sandwiches (served by default with grilled onions and mustard only), it was opened by the eponymous "Jimmy," who originally acquired the location from his aunt.  The business flourished even after the Maxwell Street neighborhood descended into a patch of urban blight.  Jimmy, who apparently escaped both the Bolshevik Revolution and the rise of Nazism, died in 1976, but passed the business off to Gus Christopoulos, who in turn passed it down to his son, conveniently named Jim.  Although Jim's Original can now be found along the west side of the Dan Ryan Expressway, the original can still be nostalgically admired in the background of the "Blues Brothers" movie.  (And, no, Jim's Original is not related to Jimmy's Red Hots.  That's why Jim likes to reminds everyone that he's "Jim's Original.")  current customers who keep returning for the delicious dogs include ernie banks and lovie smith.