The best episode written by Robert C. Cooper is "The Fifth Race", rated 8.893/10 from 28 user votes. It was "directed by David Warry-Smith". "The Fifth Race" aired on 1/22/1999 and is rated 0.1 point(s) higher than their second highest rated, "Lost City (2)".
O'Neill becomes the unwilling receptacle for a library of alien knowledge.
Director: David Warry-Smith
Writer: Robert C. Cooper
Anubis begins a systematic assault on Earth, and the planet's only hope of salvation depends on whether SG-1 can find the Ancients' mythical Lost City.
Director: Martin Wood
Writer: Robert C. Cooper
SG-1 is called into action while a film crew is documenting the Stargate program, but the S.G.C. comes under investigation after the mission goes terribly wrong.
Director: Andy Mikita
Writer: Robert C. Cooper
O'Neill goes to great lengths to keep the Ancients' knowledge from falling into Goa'uld hands when the team discovers a second repository. The President replaces General Hammond with a civilian diplomat.
Director: Martin Wood
Writer: Robert C. Cooper
Trapped on board the Odyssey, the members of SG-1 must live out the rest of their lives together when Carter activates a time dilation field to save the ship from destruction.
Director: Robert C. Cooper
Writer: Robert C. Cooper
An alien artifact transports Daniel to an alternate reality, where he is not a part of the Stargate program and the Goa'uld -- led by Teal'c -- are invading Earth.
Director: David Warry-Smith
Writer: Robert C. Cooper
SG-1 is called to defend the people of Abydos from the Goa'uld once again when they learn that Anubis, in search of a powerful device, is about to attack.
Director: Martin Wood
Writer: Robert C. Cooper
Carter and Teal'c go in search of the Asgard to try and save Colonel O'Neill, but discover that the Asgard's enemy has returned with a vengeance. The System Lords seek an alliance with Earth against a common enemy.
Director: Andy Mikita
Writer: Robert C. Cooper
As the Ori invade the Jaffa planet Chulak, Vala and Daniel must deal with their leader: Vala's young daughter, rapidly aged by the Ori to serve their purposes.
Director: William Waring
Writer: Robert C. Cooper
When SG-1 discovers that Daniel Jackson has been turned into a Prior of the Ori, they must determine whether or not his plan to destroy the Ori is genuine.
Director: Andy Mikita
Writer: Robert C. Cooper
While the Goa'uld threaten to attack Earth, SG-1 and the Asgard make a last, desperate stand against the Replicators, which have captured Major Carter and invaded the last outpost of the Asgard civilization.
Director: Andy Mikita
Writer: Robert C. Cooper
The team is called into battle unexpectedly when the Asgard homeworld is overrun by Replicators -- which have evolved into a startling new form.
Director: Andy Mikita
Writer: Robert C. Cooper
SG-1 faces creatures of mass destruction that even the Asgard can't control, and must destroy Thor's infested vessel before the Replicator bugs reach Earth.
Director: Martin Wood
Writer: Robert C. Cooper
SG-1 finds themselves stranded in a crippled ship in a distant galaxy -- with Apophis threatening to destroy them. Teal'c is brainwashed and made loyal to Apophis once again.
Director: Martin Wood
Writer: Robert C. Cooper
A new Stargate team embarks on a dangerous mission to a distant galaxy, where they discover a mythical lost city -- and a deadly new enemy.
Director: Martin Wood
Writer: Robert C. Cooper
While Daniel finds himself in a mysterious diner suspended between death and ascension, Jacob's fate takes an unexpected turn, Jack and Sam consider their romantic lives, and Anubis unleashes his plan for galactic destruction.
Director: Andy Mikita
Writer: Robert C. Cooper
SG-1 travels back in time in a daring plan to steal a piece of Ancient technology from Ra, the powerful Goa'uld who ruled in ancient Egypt.
Director: Peter DeLuise
Writer: Robert C. Cooper
An Ancient communications device renders Daniel and Vala unconscious, sending their minds to another galaxy -- where they inhabit the bodies of two people persecuted by the followers of an evil religion.
Director: Andy Mikita
Writer: Robert C. Cooper
Daniel comes face to face with the Ori, a fiery race of beings who demand the worship of mortals. Elsewhere, Stargate Command encounters the first Ori missionary in our galaxy.
Director: Brad Turner
Writer: Robert C. Cooper
Carter must find a way to save Earth from total destruction at the hands of the Goa'uld, who have turned the Stargate into a doomsday bomb. Rya'c joins his father on a mission to destroy the Goa'uld weapon.
Director: Martin Wood
Writer: Robert C. Cooper
SG-1 must free an alternate reality Earth from a Goa'uld invasion after duplicates of Samantha Carter and Charles Kawalsky come through the quantum mirror.
Director: Peter DeLuise
Writer: Robert C. Cooper
Tragedy reunites Teal'c with his son, who blames him for the death of his mother. O'Neill and Carter launch a risky plan with untested technology when Earth comes under attack by the Goa'uld.
Director: Martin Wood
Writer: Robert C. Cooper
Sheppard tries to convince Weir to mount a rescue mission to free Colonel Sumner, Teyla, and the others captured by the Wraith.
Director: Martin Wood
Writer: Robert C. Cooper
A film crew arrives to document the work of the S.G.C. for eventual disclosure to the public, but finds that the base's personnel are less than eager to participate.
Director: Andy Mikita
Writer: Robert C. Cooper
The Asgard aid Earth in negotiating a nonagression treaty with the Goa'uld System Lords.
Director: Martin Wood
Writer: Robert C. Cooper