The Museum of Flight is one of the best on the west coast. Besides the warbirds...real and replica...there are so many neat artifacts through out the museum. Lots of commercial aviation stuff too. The Big Red Barn is outstanding as well.
Definitely worth a visit. If you plan around our Sea Fair, then the Blues are based at Boeing Field...which is where the museum is, so you can see them there and in the sky over that weekend.
Not too many fly in type things but every now and again some heavies come in...which are always a treat to see.
All in all, it's pretty rad!