I think I've read this somewhere so what I've noticed isn't exactly groundbreaking (and, who knows, may have been happening for centuries), but Urban Village seems to be drawing a few folks who claim their main membership in a church elsewhere (and are perfectly happy there), but come to Urban Village for...something. It might be a small group or a social gathering or our Wicker Park Sunday evening service, but they don't have a problem with feeding their souls in different contexts.
And it isn't just our church. I met a woman a few weeks ago who goes to worship at Moody, but goes to all the Willow Creek social stuff. I don't have deep sociological insights as to why this is, but it's something the church probably should pay attention to. The phrase "cafeteria Christians" is sometimes used in a derogatory way meaning that people pick and choose their theology based only on what they like and because of that they miss pieces in Scripture that they need to hear or pay attention to. I get that, though, of course I think we're all cafeteria Christians in some form or fashion. We all have our own canons, whether we admit it or not.
But I realize when it comes to spiritual formation, I've been a bit of a cafeteria Christian myself over the years. Obviously as the pastor of a church, I haven't jumped around a lot trying different things, but in my previous church, I would attend a weekly weekday Episcopalian service. When I need a retreat, I go to a Benedictine monastery. When I need to sense the mystery of God, I go to a Taize service at a Catholic church. I'm biased, of course, but I think it's important to stay rooted in a community of faith and make commitments there, but I also affirm a person's desire and need to explore the many ways we can experience the Spirit in our midst, whether it's high liturgy or rockin' gospel music.