Capitalizing on the popularity of Sarah Jane Smith and K-9 in a recent Doctor Who episode, CBBC premieres The Sarah Jane Adventures‘ first episode. Though popular with the target audience, a full series doesn’t appear until the fall, after some reworking of the series concept. 
BBC3 premieres the 12th episode of Russell T. Davies’ science fiction series Torchwood, a more adult-themed spinoff of Doctor Who.
BBC3 airss the 13th episode of Russell T. Davies’ science fiction series Torchwood, a more adult-themed spinoff of Doctor Who. This episode brings the series’ first season to a close.
Sci-Fi Channel airs the 45th episode of Ronald D. Moore’s re-imagining of Battlestar Galactica. Lucy Lawless (Xena: Warrior Princess) and Dean Stockwell (Quantum Leap) guest star.
The 12th episode of Tim Kring’s sci-fi/superhero series Heroes airs on NBC, starring Adrian Pasdar, Jack Coleman, Ali Larter, Masi Oka, Hayden Panettiere, and Milo Ventimiglia. Zachary Quinto (Star Trek), Stacy Haiduk (seaQuest DSV) and Christopher Eccleston (Doctor Who) guest star.
Sci-Fi Channel airs the 46th episode of Ronald D. Moore’s re-imagining of Battlestar Galactica.
The 13th episode of Tim Kring’s sci-fi/superhero series Heroes airs on NBC, starring Adrian Pasdar, Jack Coleman, Ali Larter, Masi Oka, Hayden Panettiere, and Milo Ventimiglia. Zachary Quinto (Star Trek) and Christopher Eccleston (Doctor Who) guest star.
The 14th episode of Tim Kring’s sci-fi/superhero series Heroes airs on NBC, starring Adrian Pasdar, Jack Coleman, Ali Larter, Masi Oka, Hayden Panettiere, and Milo Ventimiglia. Zachary Quinto (Star Trek) and Christopher Eccleston (Doctor Who) guest star.
ABC airs the 54th episode of the J.J. Abrams-produced series Lost. Guest star Nestor Carbonell makes his first appearance as Richard Alpert.
ITV premieres the first episode of the science fiction series Primeval. Starring Douglas Henshall, the series focuses on a combination of time travel and dinosaurs (with effects provided by the producers of the Walking With Dinosaurs documentary series).
Sci-Fi Channel airs the 47th episode of Ronald D. Moore’s re-imagining of Battlestar Galactica. Bruce Davison (X-Men, Harry & The Hendersons) guest stars.
The 15th episode of Tim Kring’s sci-fi/superhero series Heroes airs on NBC, starring Adrian Pasdar, Jack Coleman, Ali Larter, Masi Oka, Hayden Panettiere, and Milo Ventimiglia. Zachary Quinto (Star Trek) guest stars.
ABC airs the 55th episode of the J.J. Abrams-produced series Lost. Alan Dale (Angel, Torchwood) and Fionnula Flanagan guest star.
ITV premieres the second episode of the science fiction series Primeval.
Sci-Fi Channel airs the 48th episode of Ronald D. Moore’s re-imagining of Battlestar Galactica.
The 16th episode of Tim Kring’s sci-fi/superhero series Heroes airs on NBC, starring Adrian Pasdar, Jack Coleman, Ali Larter, Masi Oka, Hayden Panettiere, and Milo Ventimiglia. Zachary Quinto (Star Trek), Christopher Eccleston (Doctor Who) and Bill Fagerbakke (Coach) guest star.
ABC airs the 56th episode of the J.J. Abrams-produced series Lost. M.C. Gainey and Bai Ling guest star.
ITV premieres the third episode of the science fiction series Primeval.
Sci-Fi Channel airs the 49th episode of Ronald D. Moore’s re-imagining of Battlestar Galactica.
The 17th episode of Tim Kring’s sci-fi/superhero series Heroes airs on NBC, starring Adrian Pasdar, Jack Coleman, Ali Larter, Masi Oka, Hayden Panettiere, and Milo Ventimiglia. George Takei (Star Trek), Christopher Eccleston (Doctor Who) and Eric Roberts (Doctor Who) guest star.
ABC airs the 57th episode of the J.J. Abrams-produced series Lost. Mira Furlan (Babylon 5) and Cheech Marin (of Cheech & Chong fame) guest star.
ITV premieres the fourth episode of the science fiction series Primeval.
Sci-Fi Channel airs the 50th episode of Ronald D. Moore’s re-imagining of Battlestar Galactica.
The 18th episode of Tim Kring’s sci-fi/superhero series Heroes airs on NBC, starring Adrian Pasdar, Jack Coleman, Ali Larter, Masi Oka, Hayden Panettiere, and Milo Ventimiglia. Malcolm McDowell (A Clockwork Orange) and Zachary Quinto (Star Trek) guest star.
ABC airs the 58th episode of the J.J. Abrams-produced series Lost. Mira Furlan (Babylon 5) and Andrew Divoff guest star.
ITV premieres the fifth episode of the science fiction series Primeval.
Sci-Fi Channel airs the 51st episode of Ronald D. Moore’s re-imagining of Battlestar Galactica. Mark Sheppard guest stars.
ABC airs the 59th episode of the J.J. Abrams-produced series Lost. Mira Furlan (Babylon 5) and Andrew Divoff guest star.
ITV premieres the sixth episode of the science fiction series Primeval, bringing the show’s first season to a close.
Sci-Fi Channel airs the 52nd episode of Ronald D. Moore’s re-imagining of Battlestar Galactica. Mark Sheppard guest stars.