I was thinking after watching "Powa Maka Moana" about expectations, what prior knowledge you bring in. For example, if you had no clue who Nick Lachey was, would you expect him to return later as a kidnapper? Probably not. If you hadn't watched Hawaii Five-0 before, would you think think both brazen kidnapping and McGarrett's use of the grenade was absurd? Probably.
Watching Hawaii Five-0 each week, I have a pretty good idea of what's going to come. The episode starts with a crime that would normally be the top headline for national news, and the team does their investigating, which consists of unorthodox methods, at times over the top behavior. After a while, you get acclimated to the beats of the show, and "Powa Maka Moana" begins to look normal in comparison to the rest of the show.
Score: 8.6/10
