15 February 2011,
E Online posted these spoilers about Dane Cook's character in H50, 1.18: "Loa Aloha" next week:

Dane Cook's guest appearance is coming up. If you're a fan of his comedy, you'll be happy to see he's playing a version of himself. Just add Wall Street. His character is Danny's (Scott Caan) little bro, and unfortunately he's not just in town for a family reunion. Oh, and there's a bomber on the loose. Just another day on the island.

Labels: CBS, Dane Cook, Hawaii Five-O, Season 1, Spoiler