I didn't like this episode when I first watched it, but it was mostly because of the boy, he weirded me out, lol. When I started watching Five-0 and I thought that this O'Loughlin guy was cute, so I went ahead and checked him and I couldn't for the life of me recall what role he played on CM. This is what I value in actors, I like those who can become the character they play to the point that they are unrecognizable. I still can't quite believe that it's the same actor.
Frankly, as I recall, AOL's super-human acting skillz was what sold me on H50. :)