*finger on nose, points to 21Spike65* correct-a-mondo. a word i've never used before and hope i never will again.
^Ah, didn't catch the reference. Now on to the quote: Parallel universes. The idea that all possible realities existed at once. That the space-time continuum was literally infinite--that somewhere out there was a universe containing every possible you, the you who had decided to wear a blue shirt that morning, had chosen to be a teacher, marry your high-school sweetheart, go away to college, join Starfleet. A universe where Zephram Cochrane hadn't discovered the warp engine, where the Klingons had been the ones to make first contact with humanity, where A. G. Robinson commanded Enterprise.
My original answer was the Q Continum trilogy series. I then thought that maybe Federation made more sense. I'm not sure if I'm right though (probably not)