4. Jaime Murray as Gaia

Jaime Murray first left us drooling back in 2007, when she co-starred in Dexter’s great second season as Dex’s freaky and psychotic cut-buddy. Having seen all that she’s got beneath the sheets in Dexter, we understood her presence in Spartacus: Gods Of The Arena as the conniving and ever-horny Gaia right away. The British actress is a consummate pro at batting her eyes and exuding a steamy “take me now” disposition. The show-running geniuses that they are, the producers of Spartacus wasted no time and had Gaia sex it up with Lucretia (Lucy Lawless) in her first episode. You can’t beat character development like that.