MT Ranier is good, Pike Place market is worth the visit. I found the Space Needle to be a disappointment. Great to see it on the skyline but the actual tour is expensive and it surrounded by a small amusement park

Lots of good places to get fresh seafood there.

I would reccomend this one.

The Athenian Seafood Restaurant and Bar
http://www.athenianseattle.com/
 

A scene from Sleepless in Seattle was filmed there.