As noted earlier, the Revs lost. This wasn't very surprising given the injury situation. The other matchups were Columbus vs. Kansas City, Chivas USA vs Real Salt Lake, and New York Red Bulls vs. Houston Dynamo.
Columbus was favored against KC and won easily, no surprise there. Chivas USA had the higher seed against Salt Lake but Salt Lake had been on a roll at the end of the season and so I wasn't surprised to see them beat a Chivas USA side that had a couple injury problems of its own. The shocker was today, the New York Red Bulls knocking out the Houston Dynamo by winning 3-0 away. New York's only away win this season came in week 7, beating a bad LA Galaxy team 2-1. There was a magical force field protecting New York's goal, and that plus Dane Richards having the game of his life put New York through to the Western Conference championship where I'm sure Real Salt Lake will beat them. I expect the MLS Cup final to be Columbus vs. Real Salt Lake. Columbus will be favored but I wouldn't be surprised to see Salt Lake win the whole thing.
You can see video highlights of all the games at MLS's website.