WordNet (r) 3.0 (2006):

heroics
    n 1: ostentatious or vainglorious or extravagant or melodramatic
         conduct; "heroics are for those epic films they make in
         Hollywood"

Moby Thesaurus II by Grady Ward, 1.0:

46 Moby Thesaurus words for "heroics":
   bluster, boast, boastfulness, boasting, bombast, brag, braggadocio,
   braggartism, bragging, brashness, brass, bravado, brazen boldness,
   cheek, chutzpah, conceit, fanfaronade, gall, gasconade, gasconism,
   hubris, improvidence, imprudence, impudence, indiscretion,
   injudiciousness, insolence, jactation, jactitation, overboldness,
   overcarelessness, overconfidence, oversureness, overweeningness,
   rashness, rodomontade, side, swagger, temerariousness, temerity,
   unchariness, unwariness, vanity, vaunt, vauntery, vaunting