I watched this game on TV. Humber was really dominating - threw under 100 pitches, and really only one ball was hit hard (Dustin Ackley line out to RF in the 4th).
The most impressive AB was pitching to Michael Saunders to lead off the ninth. He went 3-0 to him, got a low strike call, a big swing-and-miss on a high fastball that may have been ball four, and then has the guts to throw the hammer at 3-2 to get strike three swinging.
A little bit of drama at the end - Brendan Ryan was called swinging at a 3-2 pitch that was way outside (and dropped). I didn't think he went at the time, but looking at the replay it was pretty close - close enough for Humber to get the benefit of the doubt in a perfect game IMO.
Humber got a nice ovation from the Seattle crowd, and definitely deserved it. Pretty cool.