Big Bird and Oprah Winfrey read aloud fan letters on documentary 'Dear...'

Big Bird has fans all over the world, thanks to 'Sesame Street'. Photos: Handout

If you write a fan letter to a celebrity, you half expect that he or she will never actually lay eyes on it.

But in the new documentary series Dear..., famous names such as Oprah Winfrey, Spike Lee, Stevie Wonder and even Big Bird get to read letters from fans whose lives the stars have dramatically changed through their work.