Thanks David I'll PM you my phone # so you can give it to her. Ok Meg and CL I'm coming up your way soon and need some stuff to go see. Any ideas?
The weather is probably going to be mediocre at best, last time I checked they said rain this weekend, so be prepared for some sunshine and to get absolutely soaked (our weather forecasts have not exactly been accurate lately.)
What you can see depends on how much spare time you have and where you are. If you're downtown, then Pike Place Market, the waterfront, and the Seattle Center (and Experience Music Project) are the usual spots. There's also the Olympic Sculpture park at the end of the waterfront, it's modern art so meh but the views are nice (see previous weather comment.) If you're near the airport, you can get downtown easily using the Light Rail, and if you're feeling really adventurous, the bus system from any of the surrounding areas can be navigated into downtown. I'm not a fan though. And obviously, if you have a car you can just drive in but personally I avoid driving downtown, particularly the popular areas, at all costs.
If you have a car, the Boeing Museum of Flight is supposed to be awesome, although I personally haven't managed to get there yet. The arboretum near the University of Washington is really nice, and for smaller scale there's a Japanese Garden south of the city that's not usually crowded (kind of a bad neighborhood, though.)
Outside of the city, I'm not sure Mt Rainier is very accessible right now, it's a couple hours away but the hikes and views are spectacular. There's also supposed to be some good hikes around Issaquah/Tiger Mountain, but I'll let CL speak to those since that's his turf.
Feel free to drop me a PM if you need more specific info, I'm pretty familiar with downtown, but not so great at the transit system since I mostly just walk where I need to get around here.