There are a couple of amusement parks around the country that are looking for people with these skills. Most of them have college kids working during their summer break.
My friend's relative is in La Reve, which I guess is like Cirque - I don't know the difference . She was a top gymnast at a top-20ish D1 university, and after she graduated her coach knew the person recruiting for the show and recommended her. She still has to audition , and I remember that she had been away from gymnastics for about a year when she got the opportunity so she has to do some crazy training . But I guess it all worked out !
(The quote feature isn't working for me right now) Sarah_the_gymnast "Ahh well, I guess the circus isn't really in my future. But it's fun to dream, right? "