Amazon’s Blu-ray deal of the week is Torchwood Seasons 1 and 2, and Torchwood: Children of Earth for 53% off.

– Torchwood: The Complete First Season – Blu-ray – $40.99
– Torchwood: The Complete Second Season – Blu-ray – $32.99
– Torchwood: Children of Earth – Blu-ray – $16.49

Note: This deal is valid while supplies last through Saturday, February 19, 2011 at midnight PST.

Each Blu-ray set comes with bonus features like episode commentaries, deleted scenes, featurettes, and more.

The BBC television series Torchwood is the Doctor Who spin-off that stars John Barrowman as Captain Jack Harkness.

Torchwood follows the adventures of a team of investigators, led by the enigmatic Captain Jack. Set in the UK in the present day, the team use scavenged alien technology in a very real world to solve crime; both alien and human. Separate from the government. Outside the police. Beyond the United Nations. Everyone who works for Torchwood is young, under 35. Some say that’s because it’s a new science. Others say it’s because they die young…