Leonard Cohen's "Hallelujah" was used as background in the season finale of "West Wing" this year, but I am pretty sure it was not the music played in the "posse comitatus" episode. I think I have that episode on tape, and if I can find it, I'll do what I can to identify the song.

BTW, can't you go to NBC's website and/or the website for The West Wing and find a place to ask questions via email about the show?

Genie