who plays mcgarrett on the new hawaii five-o
Alex O'Loughlin Alex O'Loughlin /oʊˈlɒklɪn/ (born 24 August 1976) is an Australian actor and director, 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).
Scott Caan Scott Andrew Caan (born August 23, 1976) is an American actor. He currently stars as Detective Danny "Danno" Williams in the CBS television series Hawaii Five-0 (2010–present), for which he was nominated for a Golden Globe Award. Caan is also known for his recurring role as manager Scott Lavin in the HBO television series Entourage (2009–2011). He was also a part of 1990s rap group The Whooliganz with The Alchemist. The duo went by the names Mad Skillz and Mudfoot, respectively.