After a discussion with friends that there are no moustaches in space, a challenge was set to find a calendar of men in sci-fi movies with moustaches. The criteria for entry is hard, as there must be no other hair on the face except for the upper lip (with occasional spreading), so no goatees, soul patches, full beards, etc. (which unfortunately disqualifies some great ones, such as Ming the Merciless).
Mr January: Lando Calrissian
Mr February: Moonpie
Mr March: Blaine
Mr April: Wikus
Mr May: Zed
Mr June: Art Land
Mr July: Doctor Yueh
Mr August: Lt Coffey
Mr September: Peter Martin
Mr October: Ray Arnold
Mr November: Shepherd Book
Mr December: Prince Barin
The original theory still holds though, as only 4 of the 12 are in space. There must be something about launch or re-entry that tends to rip the 'tache off your face.