'Hawaii Five-O': Alex O'Loughlin plays a Navy SEAL, says 'Book 'em, Danno'

alex-o'loughlin2.jpg Alex O'Loughlin -- a veteran of three TV series "Moonlight," "Three Rivers," "The Shield" -- stars opposite Jennifer Lopez in the new romantic comedy, "The Back-Up Plan," but don't worry. He's still in the TV game, starring in the  new "Hawaii Five-O."

To prep for playing Steve McGarrett, he watched a few  episodes of the original 1968 series.

"It's very dated and it's funny to go back and watch it, even the acting is very stylized and the voice work is so different," O'Loughlin told The Dish Rag exclusively.

The new "Five-O" will be very different overall. Yes, the theme music is the same. And Steve is still fighting crime in Hawaii. But it's on a whole other level.