An aphasia-like virus planted in DS9's food replicator system by the Bajoran underground against their onetime oppressors lies dormant until being activated during refurbishment. The baffling babble epidemic leads to a quarantine that falls to Kira to cure, while the immune Odo and Quark work together to avoid a panicked ship's destruction. watch
A magnetic ore brought back from Alfa 177 causes a beam break-up in the transporter, splitting Captain Kirk into two different beings: one "good" and one "evil." The malfunction must be repaired before Sulu's stranded landing party freezes to death, and Kirk's separated "halves" perish. The Remastered edition enhances the special effects with some surprises in this landmark show. watch
When a cloaked and damaged Xyrillian ship is discovered draining warp plasma from the Enterprise, Tucker is sent to help and winds up flirting with one of the alien women, getting a look at a complex holographic environment. But reality returns later when he finds the non-sexual encounter left him pregnant! watch