The moment you said Brothers in Arms my mind definitely went to the end of ... was it S3? I think so. Romeo and Juliet is just one of my favorite songs ever, period.
Close. Season 2 finale episode. With the rain, and he's going to that press conference. Such a badass scene. One of the better things I've ever seen on television. Not spoiling because I know thenewgreen got hooked on West Wing recently. :)
Have you seen the ending to S4, with Massive Attack playing in the background for ten minutes? kleinbl00 linked it in the thread about best uses of music in movies/tv a few months ago, back when I was only in the middle of season two, and I raced through the next thirty episodes to get to it -- worth it.
Yeah, I've seen all seasons before, going back through them again now, just started S4 yesterday so I'll be there soon. :)