Star Trek: Enterprise Harbinger (2001–2005) watch online HD

This episode contains the first Star Trek female nude scene presented in a sexual context (numerous episodes of Звездный путь: Следующее поколение (1987) showed nudes in the context of art classes, nudist living, torture, streaking in protest, etc.). This episode aired in the United States on 11 February 2004 during the height of controversy over Janet Jackson exposing a breast during the Super Bowl halftime show, on a network owned by CBS (which was taking heat for the incident). As a result, the scene in which T'Pol's rear end is exposed was censored. Canadian broadcasts, however, were uncensored.

When the tactical alert is initiated in this episode, an alarm sounds that was never included in any episodes prior to this nor after it.

When Reed says "could be an escape pod" shortly after arriving at the anomoly, the sound effect of a communicator opening from the original series can clearly be heard as a background noise.

T'Pol references Sim, a short-lived clone of Tucker seen in "Similitude", who revealed his feelings (and thus, Tucker's feelings) to her.

The device on the wall at the beginning of the phase rifle training scene has several protrusions that are exactly like Uhuru's ear piece from the original series. They have appeared several times in Enterprise as parts of other devices.

This takes place in December 2153.

Thomas Kopache, who played the test subject here, has portrayed a number of different characters and aliens over the years. He appeared as Mirok in TNG: "The Next Phase", an engineer in TNG: "Emergence", USS Enterprise-B communications officer in Star Trek Generations, Viorsa in VOY: "The Thaw", Kira Taban in DS9: "Ties of Blood and Water" and "Wrongs Darker Than Death or Night", and Tos in ENT: "Broken Bow".

Steven Culp (Major Hayes) previously played Commander Martin Madden, Jean-Luc Picard's new first officer in Star Trek Nemesis, but his scenes were deleted from the final film.

Thomas Kopache is one of only a few actors to appear on all four of the Star Trek TV spin-off series and is one of only five actors to play seven or more different characters in Star Trek (the others being Jeffrey Combs, Randy Oglesby, J. G.Hertzler, and Vaughn Armstrong).

The pod is a reuse of the ship in the season 2 episode "Future Tense" and an earlier season 3 episode "Extinction", Each time it has been used, there have been cosmetic changes; however, the top of the ship, shape, and relative size have been consistent.

This is the first appearance of a member of the species that was later revealed as the Sphere-Builders.