The science fiction and horror genres have often been read as manifestations of the prevailing fears and anxieties of the cultural moments in which they are made. Whether we consider Weimar-era German cinema (see Kracauer 1947; Kaes 2011), post-Second World War Japanese science-fiction film (see Yomota 2007; Tsutsui 2004) or the cycle of alien invasion narratives produced by the American film industry during the first decades of the Cold War (see Booker 2000; Starck 2010), genre films frequently emerge as visceral and potent cultural artefacts and not, as they are often regarded in the mainstream press, superficial and shallow frivolities. In a similar vein to the examples provided above, this chapter regards the science fiction and horror films produced during the ‘War on Terror’ period as profoundly affectual documents which bear a compelling testimony to the era. While on the surface they often appear to have no apparent connection to the tumultuous events of the decade, they function as telling allegories, able, for one reason or another, to engage with their turbulent age often in ways more resonant than many films which attempted to portray the period directly (see Lowenstein 2005).