Well, I didn't see it, as I don't get GolTV. SKC 1-1 Seattle, with SKC winning on penalties, after Eddie Johnson pulled a John Terry and put the final Seattle penalty over the bar. Apparently a previous SKC penalty had been retaken after the ref called Gspurning for being off the line. It sounds a little dicey, but as a Quakes fan I'm happy to see Seattle lose.
I did go to the Quakes/Sounders quarterfinal match in SF this year (brought my coworkers, as our office is near Kezar Stadium), and had a good time. The USOC is a weird little tournament but I wouldn't mind it gaining some more traction.
Jeff Carlisle's writeup:
http://espn.go.com/sports/soccer/story/_/id/8250203/us-soccer-sporting-kc-beats-seattle-win-us-open-cup-jeff-carlisle (http://espn.go.com/sports/soccer/story/_/id/8250203/us-soccer-sporting-kc-beats-seattle-win-us-open-cup-jeff-carlisle)