I know that the OP was looking for shows on the West Coast of the USA, but IMO the absolutly must see show anywhere is the Shuttlworth Collection shows held at Old Warden Airfield in Bedfordshire England. This is the only palce in the world that you can see many of the worlds oldest surviving examples of types, and dating to before WWI and all in airworthy condition. A few examples are:
Bleriot XI from 1909 the same type as Bleriot used for the first crossing of the English Channel. Not only have I seen them fly it but crash it as well!
Blackburn Monoplane from 1912, the oldest British aircraft in existance, it flys much better than the aircraft mentioed above.
Sopwith Pup WWI British fighter.
LVG C VI only surviving WWI German aircraft left anywhere, also still flying.
Bristol Fighter, another WWI British fighter, but in this case a two seater. Seeing a mock dogfight with the LVG, with both observers firing blanks from their machine guns was undoubetdly superb.
They had the sucessor to Sopwiths (now part of BAE) make them a Camel from the original drawings. It is offically not a reproduction, but an original just built after a bit of a gap in production!
Many 1920's and 30's civillian and millitary aircraft
Gloster Gladiator Last one of those as well.
The two newest types that they have would be the Spit MkVc and a just post war Percival Piston Provost.
There was a comedy film made in the late 1960's called: Those Magnificent Men in Their Flying Machines. Many very early types were recreated for the film, including the A V Roe Triplane and the Bristol Boxkite (a licence built version of the Wright Flyer) These replicas are also in the collection.
The fact that the Airfield is grass and very small stops them being able to operate anything newer/bigger.
The Airfield also stared in the BBC TV Drama series Wings, which was made in the 1970's and was about a WWI RFC Squadron, which I guess may have made it across the pond.
I haven't been in quite a few years but plan to change that this year. They normally have monthly shows between May and October.