Which character does Alex O'Loughlin play in "Hawaii Five-O"?
Alex O'Loughlin Alex O'Loughlin (born 24 August 1976) is an Australian actor, who plays Lieutenant Commander Steve McGarrett on CBS' remake of the TV series "Hawaii Five-0". He had starring roles in the films "Oyster Farmer" (2004) and "The Back-up Plan" (2010), as well as on such television series as "Moonlight" (2008) and "Three Rivers" (2009).
Andrew Keegan Andrew Keegan (born January 29, 1979) is an American actor best known for his roles in television shows including "Party of Five" and "7th Heaven" and in films such as "10 Things I Hate about You", "The Broken Hearts Club" (2000) and "O" (2001).