The final offering in the Spring 2011 Free Film Festival will be Pink Floyd The Wall, scheduled to be shown at 7 p.m. Tuesday, April 26, in Leach Theatre. Rock band Pink Floyd’s 1979 best-selling album “The Wall” comes alive in one somber and nightmarish image after another in what is perhaps the longest-running music video of all time. This cult classic documents the frenzied despair of a rock star on the brink of a mental breakdown. The 1982 R-rated film is free and open to the public.