Who says Space nerds don't have a sense of humour...
Behold the Mission Poster for ISS Expedition Crew 42
The crew of Expedition 42 poses in a parody shoot of "The Hitchhiker's Guide to the Galaxy." From left: Terry Virts, Anton Shkaplerov, Alexander Samokutyaev, Barry Wilmore, Elena Serova, Samantha Cristoforetti.
Credit: NASA ^ Click for link to huge version
Douglas Adams would approve, I'm sure.