Unit 

The DVD release of Season Four did not include any audio commentaries.

 

Listing 19 commentaries.

The Unit - The Complete First Season cover

The Unit - The Complete First Season
1 commentary
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Episode 1.08: “SERE”
Commentators: Shawn Ryan Eric Haney Demore Barnes

The Unit - The Complete Second Season cover

The Unit - The Complete Second Season
10 commentaries
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Episode 2.02: “Extreme Rendition”
Commentators: Shawn Ryan Nicolas Bradley Regina Taylor

Episode 2.03: “The Kill Zone”
Commentators: Demore Barnes Dennis Haysbert Lynn Mamet Robert Patrick

Episode 2.05: “Force Mejeure”
Commentators: Scott Foley Michael Irby Max Martini Daniel Voll

Episode 2.08: “Natural Selection”
Commentators: Audrey Marie Anderson Scott Foley Eric Haney Sharon Lee Watson

Episode 2.11: “Silver Star”
Commentators: Bill L. Norton Dennis Haysbert Max Martini

Episode 2.13: “Sub-Conscious”
Commentators: Audrey Marie Anderson Abby Brammell Daniel Voll

Episode 2.14: “Johnny B. Good”
Commentators: Todd Ellis Kessler Max Martini Vahan Moosekian

Episode 2.17: “Dark Of The Moon”
Commentators: Eric Haney Dennis Haysbert Shawn Ryan Michael Zinberg

Episode 2.22: “Freefall”
Commentators: Abby Brammell Dennis Haysbert Daniel Voll

Episode 2.23: “Paradise Lost”
Commentators: Abby Brammell Dennis Haysbert Lynn Mamet Vahan Moosekian

The Unit - The Complete Third Season cover

The Unit - The Complete Third Season
8 commentaries
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Episode 3.01: “Pandemonium, Part One”
Commentators: Vahan Moosekian Krishna Rao Sharon Lee Watson

Episode 3.02: “Pandemonium, Part Two”
Commentators: Dennis Haysbert Michael Irby Todd Ellis Kessler Vahan Moosekian Rebecca Pidgeon Krishna Rao

Episode 3.03: “Always Kiss Them Goodbye”
Commentators: Dave Altenau Abby Brammell Shawn Ryan

Episode 3.04: “Every Step You Take”
Commentators: Demore Barnes Lynn Mamet Rick Tuber

Episode 3.05: “Inside Out”
Commentators: Audrey Marie Anderson Demore Barnes Abby Brammell Dan Hindmarch

Episode 3.07: “Five Brothers”
Commentators: Demore Barnes Dennis Haysbert Michael Irby Max Martini Frank Military

Episode 3.08: “Play 16”
Commentators: Demore Barnes Dennis Haysbert Michael Irby Max Martini Robert Patrick Daniel Voll

Episode 3.09: “Binary Explosion”
Commentators: Demore Barnes Dennis Dion Dennis Haysbert Randy Huggins Michael Irby Robert Patrick

Involving 27 commentators.