The Leftovers 

Special thanks to John F. for compiling this information.

The DVD releases of Season 2 and Season 3 did not include any audio commentaries.

 

Listing 2 commentaries.

Leftovers: Season 1 cover

Leftovers: Season 1
2 commentaries
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Episode 1.01: “Pilot”
Commentators: Damon Lindelof Tom Perrotta

Episode 1.10: “The Prodigal Son Returns”
Commentators: Damon Lindelof Tom Perrotta Mimi Leder

Involving 3 commentators.