One 树 爬坡道, 小山 7x09: Dan returns to 树 爬坡道, 小山 

Most epic quote of the episode:
"When you get tired of my high school class, I'm sure I could rummage through some of my old middle school friends for you."
- Nathan, to Dan

and

Haley: "He is the healthiest looking dying man I've ever seen."
Nathan: "I guess evil does a body good."