1. Star Trek: Enterprise, "These Are the Voyages" - The End
However, some things can be overcome. by its fourth season, Enterprise was looking to be a well rounded, often exciting, and occasionally moving hour of television every week. It moved back to Earth on several occasions and really brought home how it would be for humanity to encounter a wider universe. the characters were starting to settle in too, finally taking up the roles made for them and creating believable relationships with each other. it even delivered what should have been the best season finale two-parter that Trek had delivered in six years. Then it got cancelled and Rick Berman and Brannon Braga tried to wrap up three years of extra planning in a single, tag-on episode. What we got was Jonathan Frakes playing a younger version of Riker when he had clearly aged past the point where he could pretend to be anything younger than 40. And they killed off a popular character, for no other reason than to be cynical. The controversy with this episode has nothing to do with network, fan, or internal conflict, but everything to do with how horribly callous they decided to end Star Trek on the small screen, by making it all take place on a holodeck.