Red alert! It turns out actors Peter Sarsgaard and Alex Skarsgard are not brothers, despite their surnames sharing a few letters. Well damn! I've been assuming they were related for the past year. Peter Sarsgaard (above) is an American character-actor who played a devious Southern lawyer opposite Kate Hudson in The Skeleton Key (2005). He recently starred as Carey Mulligan's charming, but shady British lover in An Education (2009).