This day in geek history: September 28
1987
Cast from the first season of Star Trek: The Next Generation
First episode of Star Trek: The Next Generation aired on UPN: ST:TNG was the third TV series in the Star Trek universe (after TOS and TAS) and was the first spin-off, taking place 100 years after the setting of the original series. It aired 21 years after ST:TOS and went on for 7 years, far outstripping the run of the original.
http://en.wikipedia.org/wiki/Star_Trek:_The_Next_Generation