WWDC conference anyone?? / What to see in San Francisco

Hi!
Just got a email that I got a student scholarship to the WWDC in San Francisco in June :D Yeah!! (comming up from Brisbane, Australia)
So: who is going??
This is going to a great conference and I'm over the top tonight (and I had my 25th yesterday, so this was a good birthday present!)
Well: I don't have that many days over there, but I'm aiming at some days before the conference starts to have a look around SF. I've been there 5 years ago, but what is there to see ?? (I've been to all the obvious tourist places, so don't mention them :) )
Any good recomendations??

Have a look at http://developer.apple.com/wwdc/ if you haven't been there yet!