Bridging the gap between Star Wars Episode II and Episode III, Cartoon Network premieres the 20th mini-episode of Genndy Tartakovsky’s The Clone Wars animated shorts. The Clone Wars shorts return – in a slightly less short format – in the spring of 2005, running up to the theatrical release of Episode III; on DVD, this is also the end of Volume One. This installment marks the first appearance of General Grievous. 
The 70th episode of the prequel spinoff Star Trek: Enterprise airs on UPN.
The 71st episode of the prequel spinoff Star Trek: Enterprise airs on UPN.
The 72nd episode of the prequel spinoff Star Trek: Enterprise airs on UPN.
The 73rd episode of the prequel spinoff Star Trek: Enterprise airs on UPN.
The 74th episode of the prequel spinoff Star Trek: Enterprise airs on UPN.
The 75th episode of the prequel spinoff Star Trek: Enterprise airs on UPN.
The 154th episode of Stargate SG-1 airs on the Sci-Fi Channel, starring Richard Dean Anderson, Amanda Tapping, Michael Shanks, and Christopher Judge. This is the eighth season premiere.
The 155th episode of Stargate SG-1 airs on the Sci-Fi Channel, starring Richard Dean Anderson, Amanda Tapping, Michael Shanks, and Christopher Judge.
Sci-Fi Channel airs the two-hour premiere episode of Stargate Atlantis, a new spinoff of Stargate SG-1. SG-1 stars Richard Dean Anderson and Michael Shanks makes guest starring appearances in the episode, which sees the departure of an Earth expedition on a one-way journey through the Stargate to an alien base in the Pegasus Galaxy. The new series launch is well-received, with the existing Stargate fanbase eagerly awaiting the spinoff.
The 156th episode of Stargate SG-1 airs on the Sci-Fi Channel, starring Richard Dean Anderson, Amanda Tapping, Michael Shanks, and Christopher Judge.
Sci-Fi Channel airs the second episode of Stargate Atlantis. Christopher Heyerdahl (Sanctuary) guest stars.
The 157th episode of Stargate SG-1 airs on the Sci-Fi Channel, starring Richard Dean Anderson, Amanda Tapping, Michael Shanks, and Christopher Judge.
More about Stargate SG-1 in the LogBook and theLogBook.com Store
Sci-Fi Channel airs the third episode of Stargate Atlantis. Christopher Heyerdahl (Sanctuary) guest stars.
The 158th episode of Stargate SG-1 airs on the Sci-Fi Channel, starring Richard Dean Anderson, Amanda Tapping, Michael Shanks, and Christopher Judge.
Sci-Fi Channel airs the fourth episode of Stargate Atlantis. Christopher Heyerdahl (Sanctuary) guest stars.
The 159th episode of Stargate SG-1 airs on the Sci-Fi Channel, starring Richard Dean Anderson, Amanda Tapping, Michael Shanks, and Christopher Judge.
Sci-Fi Channel airs the fifth episode of Stargate Atlantis.
The 160th episode of Stargate SG-1 airs on the Sci-Fi Channel, starring Richard Dean Anderson, Amanda Tapping, Michael Shanks, and Christopher Judge.
More about Stargate SG-1 in the LogBook and theLogBook.com Store
Sci-Fi Channel airs the sixth episode of Stargate Atlantis. Alan Scarfe guest stars.
The 161st episode of Stargate SG-1 airs on the Sci-Fi Channel, starring Richard Dean Anderson, Amanda Tapping, Michael Shanks, and Christopher Judge.
More about Stargate SG-1 in the LogBook and theLogBook.com Store
Sci-Fi Channel airs the seventh episode of Stargate Atlantis. Colm Meaney (Star Trek: Deep Space Nine) guest stars.
The 162nd episode of Stargate SG-1 airs on the Sci-Fi Channel, starring Richard Dean Anderson, Amanda Tapping, Michael Shanks, and Christopher Judge.
More about Stargate SG-1 in the LogBook and theLogBook.com Store
Sci-Fi Channel airs the eighth episode of Stargate Atlantis. Don S. Davis (Stargate SG-1) guest stars.
The 163rd episode of Stargate SG-1 airs on the Sci-Fi Channel, starring Richard Dean Anderson, Amanda Tapping, Michael Shanks, and Christopher Judge.
More about Stargate SG-1 in the LogBook and theLogBook.com Store
Sci-Fi Channel airs the ninth episode of Stargate Atlantis. Colm Meaney and Robert Davi guest star. This is the first half of a cliffhanger which is resolved in January.
The internet-based fan film Star Trek: Phase II releases its second full-length episode, In Harm’s Way. William Windom, Malachi Throne and BarBara Luna guest star.
The 76th episode of the prequel spinoff Star Trek: Enterprise airs on UPN, opening the series’ fourth season.
The 77th episode of the prequel spinoff Star Trek: Enterprise airs on UPN, concluding the opening two-parter.
The first night of the miniseries Farscape: Peacekeeper Wars airs on the Sci-Fi Channel, starring Ben Browder and Claudia Black, and providing (by massive fan demand) an epilogue to the cancelled series.