I loved Tale of Two Cities, but it did take me an embarrassing eternity to get through. Certain parts grabbed me and I adored the cadence of particular lines, but somehow the writing style was so soporific for me that I could only read little bits at a time, with terribly long stretches in between.
I saw a theatre production before finishing the book, and fell in love with Sidney Carton immediately. :) Ah yes, the melodrama - what's not to love.