Just thought I'd add this OTH quote cause its one of my faves!!
It's from season three when Peyton is redecorating her room, again!, when each line is being said, par Peyton instead of the usual Lucas voice over, the camera focuses on all of the OTH residents.

There are 6,470,818,6771 billion people in the world- give ou take a few.

Some are running scared,
Some are coming home,
Some tell lies to make it through the day,
Others are just now facing the truth,
Some are evil men, at war with good,
And some are good, struggling with evil,

Six billion people in the world,
Six billion souls,
And sometimes,
All toi need is one.