If Wayne Grudem is the theological center of Acts 29 (yeah, yeah... humanly speaking, of course. If there's a more influential modern theologian for the Acts 29 movement, I'd be happy to be corrected on this), then for Evergreen and possibly more and more churches like us, it's Stanley Grenz.
We use both Grenz's Theology for the Community of God (his systematic theology) and Created for Community (a shorter, summary version of Theo. for the Comm. of God) extensively in our theology pubs and discussions. Of course, we have and will use other things, but Grenz has served as a great, uh... "foundation" for us (if you don't get that... just move on :)
Whether it's his positive views on women in ministry (I think evergreeners are pretty united on this one), "welcoming but not affirming" in terms of various sexualities (maybe slightly less so on this one), even a drift towards amillennialism (that would be more me than evergreen), we're pretty much in line with Grenz (except on his congregational rule- we have elder rule, as it's a necessity without membership, though with a strong emphasis on consensus from and among the people).
"I love the fact that Grenz does not polarize or belittle either of the two streams within evangelicalism. He is able to critique and examine both streams thoughtfully engaging with their primary works and shows how all of these men had/have a passion for engaging the times in which they live. Grenz ends with a call for (using Hans Frei's phrase) a generous orthodoxy (which Mclaren picked up and ran with) within evangelicalism instead of constantly trying to define evangelical orthodoxy in fundamentalist terms. Evangelicalism is a broad and diverse group of thinkers and theologians where there is room to think, to change, and to challenge traditional understandings. The boundaries are large and there is plenty of room for diversity theologically. That is why even Clark Pinnock who is an open theist, annihilationist, and an inclusivist can still be a part of the Evangelical Theological Society! I disagree with all three of those things, but he is still a brother in Christ. This was a good reminder that Clark's theology is not what saves him, nor even is his understanding of the atonement what saves him, but it is Jesus Christ who saves him."