A friend of mine works for a large company who has a pretty successful in-house large-scale SOA deployed in production. He emailed me and asked whether I knew of other folks who have deployed large-scale SOAs in production, so he could find others with whom he could compare notes and such, but the only ones I know of are those of our customers, and NDAs prevent me from talking about those without permission.
So, anybody out there who has a large-scale SOA in production want to compare notes with my friend? If so, contact me directly and I'll pass you along to my friend.