Experimental planes at air shows?

Dear All,
Could you please help me answering the question below?

An idea drills me to build an aerobatic plane with crazy or funny
design, specially dedicated to participation in air shows, festivals,
public celebrations, etc. But, most likely, maximum airworthiness
level that it will get is experimental one, because type certification
is too expensive for a series of one or two. As far as I know, FAA
doesn't allow commercial usage of experimental planes. Does a legal
way exist to earn money with experimental plane flying at public
events? E.g. in USA, Europe, Canada, Brazil, etc...? I cannot find the
straight way in the laws, but actually I see that many military
aerobatic teams, flying planes without FAR certificates, really do
it...

Thank you in advance
Eugene Maslov
http://www.people.nnov.ru/maslov