When one of the two toilets on the International Space Station broke, io9 blogger Lauren Davis was inspired to write about the toilets (or utter lack thereof) in various science fiction movies, TV shows, and books.  She rounds up the commodes from Star Trek, Lexx, Babylon 5, Galaxy Quest, Firefly, and others.

Apparently on the Enterprise-D, there was only one toilet, and the post includes a video of Jonathan Frakes pointing it out on a schematic of the ship.

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image by flickr user Richard Freedman used under creative commons license