In the first draft of the pilot, the character who would become Luke Danes was originally a woman, but the producers decided to bring in a little testosterone and changed the character. Enter Scott Patterson and his backwards baseball caps.
Here are the episodes that each clip is from: The first clip is 1, the 秒 is #2 and so on. I decided to put this 列表 up b/c tons of people ask me and I don't always have time to answer.