If you haven't done it I would recommend you go once to the AXALP airshow in the alps in October 12/13. It's just Swiss AF but is held at 2250m altitude and is spectacular but is prone to weather cancellation.

http://www.lw.admin.ch/internet/luft..._ebenfluh.html

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I just posted this info under 'Events'. The airshow is cancelled this evening due to the weather. This is what the website states:

La démonstration de ce soir (vendredi 26 août 2011), qui devait avoir lieu à Ouchy, est annulée pour cause météorologique.

Aree with the above, Axalp is worth going to at least once.

Also there is a small airshow in Val-de-Travers, Motiers.
http://www.acvt.ch/
03rd Sept.

Ambri fly-in
http://www.fly-in.ambri-airport.ch/
10-11th Sept.

Sion air show
http://www.breitlingsionairshow.com/intro.html
16-18th Sept.

Website for european airshows. This is a good link to keep handy, as it links to the shows own websites, and is constantly updated.
http://www.milavia.net/airshows/cale...11-europe.html

Chris