Season 2, episode 13 Sheldon displays his friendship algorithm as a flow chart, and tests it. (this belongs to CBS, not me, I'm just enlightening you with Sh...
The Big Bang Theory - The Friendship Algorithm
Video Lesson - Friendship Soup Recipe
Best Friendship Song Ever By Bruno Mars
Animated cartoon about friendship :)
Aviators - Friendship
What is a Friend?
Quotes on Friendship Video