Sherlock 

Special thanks to John F. for helping to compile this information.

The DVD releases of Season 3 and Season 4 did not include any audio commentaries.

 

Listing 4 commentaries.

Sherlock: Season One cover

Sherlock: Season One
2 commentaries
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Episode 1.01: “A Study in Pink”
Commentators: Mark Gatiss Steven Moffat Sue Vertue

Episode 1.03: “The Great Game”
Commentators: Benedict Cumberbatch Martin Freeman Mark Gatiss

Sherlock: Season 2 cover

Sherlock: Season 2
2 commentaries
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Episode 2.01: “A Scandal in Belgravia”
Commentators: Sue Vertue Mark Gatiss Steven Moffat Benedict Cumberbatch Lara Pulver

Episode 2.02: “The Hounds of Baskerville”
Commentators: Russell Tovey Steven Moffat Mark Gatiss Sue Vertue

Involving 7 commentators.