What's the goal of Catholic/Protestant ecumenism? In a small town, the height of ecumenism is a joint Christmas choir concert.  We certainly tolerate each other enough not to throw our respective clerics/elders out of our steeples.  But we don't really come to any sort of understanding of each other. 

I've learned more about protestantism in 2 weeks of this website than I have in the last 20 years of parish life.  Which raises the question, what is the overarching goal of ecumenism?  

It would seem to me that there are two natural ends.


Reconciliation, where we acknowledge our differences and proceed on our different courses towards salvation in harmony with one another or 
Reunification, where we acknowledge our differences and proceed with our one course toward salvation in a sonorous melody. 


perhaps there are more goals, but are there any ecumenical documents to show that we're making any progress toward these goals?  Also, are they polar opposites, if we proceed toward Reconciliation do we throw out Reunification?
Very interesting question.
First, what should be the goal of ecumenism? I believe it has to be reunification. Pardon my translation of choice (NIV) (added own emphasis)
Paul talks about our differences in 1 Corinthians 12:12-14

12 Just as a body, though one, has many parts, but all its many parts form one body, so it is with Christ. 13 For we were all baptized by one Spirit so as to form one body—whether Jews or Gentiles, slave or free—and we were all given the one Spirit to drink. 14 Even so the body is not made up of one part but of many.

In the broader context of the passage, this is talking about gifts and each of us are called to do different things for the body of the Church. But it does highlight that we are not all the same, we have our differences.
But the overall goal of the true church should be unity.

Ephesians 4:4-5 (NIV)
4 There is one body and one Spirit, just as you were called to one hope when you were called; 5 one Lord, one faith, one baptism; 6 one God and Father of all, who is over all and through all and in all.

But why not reconciliation? When I hear that word, I think of the definition to compose or settle (a quarrel, dispute, etc.). Given that there has been millenia for people to offend each other and great chasms in the different denominations, it seems unreasonable to believe we can work through all that history.
Besides, it is a christian command to forgive one another. But it has to be our prayer to be united in Christ so the world will know he is from God

John 17:22-23
22 I have given them the glory that you gave me, that they may be one as we are one— 23 I in them and you in me—so that they may be brought to complete unity. Then the world will know that you sent me and have loved them even as you have loved me.

So to answer the question Also, are they polar opposites, if we proceed toward Reconciliation do we throw out Reunification?: I don't believe they are polar opposites, but using the above definition of reconciliation, I don't think it's necessary to reconcile in order to reunify.
As for the official progress of ecumenism, wikipedia has some history on it from a (mostly) Catholic point of view. Focusing on the section of 'recent' progress:

The mutual anathemas (excommunications) of 1054, marking the Great Schism between Western (Catholic) and Eastern (Orthodox) branches of Christianity, a process spanning several centuries, were revoked in 1965 by the Pope and the Ecumenical Patriarch of Constantinople.

I find it interesting that ecumenism between Catholics and Protestants don't seem to be a main focus. It seems to be between Catholics and Orthodox, and the various denominations of Protestants.

Organizations such as the World Council of Churches, the National Council of Churches USA, Churches Uniting in Christ, Pentecostal Charismatic Peace Fellowship and Christian Churches Together continue to encourage ecumenical cooperation among Protestants, Eastern Orthodox, and, at times, Roman Catholics.

Most recently, the US Episcopal Church seems to have made a blunder in uniting the beliefs (also from that wikipedia article):

The decision by the U.S. Episcopal Church to ordain Gene Robinson, an openly gay, non-celibate priest who advocates same-sex blessings, as bishop led the Russian Orthodox Church to suspend its cooperation with the Episcopal Church

But the American denominations are making some progress by remaking an organization to unite the churches in 2002.