Robin Williams and Christopher Reeve
Now this is a friendship we love.
Robin Williams and his Superman pal became BFFs when they both studied together at Julliard School of Drama in New York.
They were roommates and often the only two students in class together.
Christopher died in 2004, and his wife shortly after in 2006, so Robin vowed to take care of their orphaned son. He then passed away in 2014.