Peter brought this to my attention and I thought I'd post a link here. It's a video recording of the congregation at Christ Church in Moscow, Idaho singing "Before Thee Let My Cry Come Near," or Psalm 119:169-176. We sing this in parts at our church as well, though there are much fewer of us. :-) This recording was taken at one of the church's psalm sings. REALLY nice!
There are some recordings of other psalms at Doug Wilson's blog as well: www.dougwils.com.