Season one of CASTLE will be released, on DVD, on September 22, 2009.

A bestselling novelist (Nathan Fillion) and a New York City detective (Stana Katic) delve into real world crime, starting with a copycat killer who recreates the murder scenes depicted in his novels. Finding true life mysteries more stimulating than fiction, writer Richard Castle continues to offer his professional insights to Detective Kate Beckett— whether she wants them or not. Sparks fly and a hint of romance hangs in the air as these two strong personalities investigate some of the most puzzling crimes on the
NYPD’s docket.

I am a fan of both CASTLE and Nathan Fillion. CASTLE does have some weaker crime stories, but the characters are good and the dialogue is very fun. I suggest picking up season one.

Buena Vista Home Entertainment’s press release listed the following extras:

Misdemeanors: Bloopers & Outtakes
Whodunit: The Genesis of Castle – The show’s creators talk about the genesis of Castle, including insights into how the great fictional detectives and mystery writers of the past have influenced the show.
Castle’s Godfather – Meet frequent Cast guest star and legendary Mystery Writer/Television Producer Stephen J. Cannell
Exclusive Audio Commentaries
Write-Along With Nathan Fillion – Join the star of Castle as he spends a hilarious day tagging along with a real-life mystery writer

MSRP: $39.99
The second season of Castle airs on ABC starting September 21, 2009.