Pharrell Williams - singer, producer, hat enthusiast - has a rider for the green room at his concerts and appearances, like most famous musicians. Most of the items on there are fairly typical (think water, M&Ms, snacks), but during a recent appearance on 'Jimmy Kimmel Live!' the host pointed out an odd detail on Pharrell's rider:

A framed photo of Carl Sagan.

Here's how Pharrell explained it:

“I think Cosmos is amazing, was amazing…it’s great. Carl had like an incredible way of reminding us of how insignificant we are but how significant this opportunity to live this life on this planet could be.”

Watch the interview above. 

Carl Sagan, of course, also wrote about the benefits of marijuana in an essay under the pseudonym 'Mr. X'.