I had found in previous years my airband scanner was great for the civil aircraft such as the Harvards, stunt aircraft, and Sean Tucker (especially when he talks to the crowd). I couldn't pick up the Snowbirds though, I figured they were on VHF.
The snowbirds are on 272.1 (military band).. I have it tuned on this year's air show and of course enjoying hearing them making the calls as they fly (blew) by me..
Seeing the F-22 "unexpectingly" is also a bonus this year!