Star Trek: The Next Generation – Parallels [7.11]

Returning to the Enterprise after participating in an athletic tournament, Worf finds himself moving into a variety of similar but not identical parallel universes, seemingly randomly.  He must deal with the confusion of finding himself both married to Deanna Troi and being the first officer of the Enterprise.  Eventually, it is realized that Worf had encountered a strange phenomena in space which caused him to shift universes whenever he is close to Geordi’s VISOR.