Hot Celebrity Brothers: We Love Your Genes! (PHOTOS)

Stellan Skarsgard knows how to make ’em hot. The 61-year-old Swedish actor has six kids, four of whom have gone on to become actors. Alexander (left, the best-known of the Scandinavian bunch) is fangtastically sexy on HBO’s True Blood, and Gustaf (right) is currently filming a TV series called Vikings for the History channel.