I second what everyone else is saying about the GPA, its just an average. My science GPA was definitely below their average, and I'm (at this point) very high up on the waitlist and hopefully will be accepted soon. Plus, you have to factor in the weighted way that UW calculates GPA, that actually made a big difference in mine.
As for the cookie, I've heard so much about it. Do you guys really think it has meaning? They didn't ask me if I wanted one until I was on my way out the door. And then when I took one, they said "Go ahead and take a few if you want!" I was thinking, "Dang, maybe they are just trying to make me feel better about myself". Then I convinced myself that it was just a cookie and they were just being nice.