Star Trek Fan Collective: Time Travel (DVD)

If you want just one Star Trek DVD set in your collection, Star Trek Fan Collective: Time Travel may be it. Of the 15 time-bending episodes on the affordably priced four-disc set, two are perhaps the most acclaimed in franchise history: the Original Series' "The City on the Edge of Forever" (written by sci-fi giant Harlan Ellison) and Deep Space Nine' s "Trials and Tribble-ations" (in which the DS9 crew is cleverly edited into the original crew's "The Troubles with Tribbles" episode). The other selections are the Original Series' "Tomorrow Is Yesterday"; The Next Generation's "Yesterday's Enterprise," "Cause and Effect," the two-part "Time's Arrow," and the series finale "All Good Things..."; DS9's "Little Green Men"; and Voyager's two-part "Year of Hell" and series finale "Endgame."