I found Pike Place a little overrated too ... except for that guy who sells the nuts at street level. Those were amazing. Unfortunately I don't recall the name. Those nuts were basically crack.
We also went to
The Crab Pot which I'm guessing locals probably roll their eyes at, but it was a really casual place where they dump a ton of seafood on your table and give you a hammer. So how can you complain? edit: I notice that flamesfan74 recommended this place too ... so I'm a little less embarrassed to recommend it now
I'm also a giant ####ing nerd, so I went to the Museum of Flight. They have an old Air Force One, a Concorde ... some space shuttle stuff and I nerded out at the Vaught F4U Corsair for a bit. Not sure if that's a couple thing though