Soak up Irish films in Logan Square, take a dip in the lake for charity and see a new special exhibition at the Field Museum. Details on these events and more in our weekend roundup.

Elizabeth Brackett was there as Mayor Rahm Emanuel and Jimmy Fallon, along with thousands of others, hit the frigid Lake Michigan waters on Sunday for this year's Special Olympics Polar Plunge. Read her blog, watch videos and see photos.

A polar plunge, a tour of Chicago's theater district, and a zombie maze game; Chicago Tonight knows what’s going on this weekend.