Unrestrained Worship

I'm reminded of something I told Adam (or maybe Bryan, or Aaron, or myself). How come, when we're at a concert we lift our hands in some wacko idolatry, dance and scream our heads off. Then, come Sunday we're like statues, while the band (especially the drummer) is working their butts off trying to get the Spirit flowing. I wouldn't move during worship for a long time. I might as well of put on a suit, had a hymnal shoved in my hands, and headed on down to the traditional service at the local First Baptist. I know now I was blocking true worship and being ashamed in front of God. What kind of praise was that?