Commentary Tracks: There should be a commentary database online

[Race Bannon]

I didn't use to ever listen to commentaries. Or any extras. All I cared about was watching the movie.

Now, commentaries are my main "extra feature" that make a difference in whether I'll pull the trigger on a borderline purchase decision.

Do you ever wonder things like "What are all the commentary tracks Arnold Schwarzenegger has ever done?" Or Ridley Scott? Or whoever?

I wish there was a searchable database of commentary tracks that are known to exist. I often search manually, and have a good idea of the ones I'm interested in that are out there.

Any ideas about how to efficiently search and track this info somehow, by actor or director? I wish that feature were somehow searchable here at this wonderful site.