The Best of Star Trek: The Original Series is a DVD featuring the remastered episodes "The City on the Edge of Forever" , "The Trouble with Tribbles" , "Balance of Terror" , and "Amok Time" . No bonus features are included with the release, which is intended to be a "teaser" for the series, tying in with the release of Star Trek, as noted by its back cover copy, which states, "Continue the excitement of the Star Trek experience with four of the very best episodes from the series that started it all!".