Elliot Bay Book Co. is pretty nice.

At Pike's, get some smoked salmon bellies at Seattle Flying Fish, then get a baguette about a block away at Le Panier for a very nice snack.

Steak at the Metropolitan Grill is great, but so is their "signature" martini, which replaces the vermouth with 18yr scotch. Very smoky flavor.

The Ikon Grill is usually very good for upscale comfort food.

There is "real" bar-b-que" in Bellvue at "Dixies" It looks like a dump, being a former auto repair shop, but it's the real deal. For a challenge, ask to meet "The Man." I took two hits from the toothpick and said aloha to my taste buds for about 40 minutes.

Boeing Tour in Everett, north of Seattle
Museum of Flight, south of Seattle
Experience Music Museum in Seattle
I've not been to the Sci-Fi Museum, so can't say if it's worth it.