I will have to whole heartedly agree with Phatboy on this one. There is one church. Denominational walls mean nothing to God and very little to most of the younger generation.
There are a lot of things that the churches disagree on, but that's our own fault. Not God's. Sometimes we as humans are so bound by tradition, or pride, or whatever that we aren't listening. I'm including myself in here! What it really comes down to is that there are certain things that you have to believe in order to be a Christian and the rest doesn't matter in the long run anyway.
It doesn't matter if your a presbyterian, baptist, pentecostal, catholic, or whatever other denomination you want to throw in there. If you can believe in your heart and proclaim that Jesus is Lord, your part of the invisible church. That's the church that's the bride of Christ. Many people who sit in the pews week after week don't belong to it and many people who you never see there do!!
Maybe I'm biased because I'm 22 and have attended 5 different denominations even though I wasn't Christian for most of my life, or maybe it's a local thing,(I hope not) but the denominational walls are really beginning to crumble. Maybe it's part of the pluses of the postmodern movement, but nobody I know my age cares what denomination you attend. I attend a denominational Bible College for a denomination that I have never attended with students who attend 5 or 6 different churches (it's a small college).
When it all comes down to it, it doesn't matter if your a pre- post- or ammillenialist, a Pentecostal or a cessationist, a contemporary or orthodox worshiper. We've all got some of it wrong because we all allow ourselves to get in the way.
What matters is that we begin to move in unity, and let what has kept us apart in the past go. I will probably never find someone who agrees with all my theology, but it doesn't matter. They are all my brothers and sisters in Christ.