Tarzan, The Shadow, Doc Savage, Buck Rogers and Flash Gordon were among many men's action adventure heroes that became popular when pulp stories were big in the golden age of adventure stories in the middle of the last century. For this generation, men's adventure books are making a comeback of sorts. If women download stuff like 40 Shades of Grey and steamy pulp romance, what modern heroes do guys of all ages have as their guilty pleasure reading fix?