My cousin and her husband are circus performers (yes, professional ones). They have traveled all over the world performing for various shows but when they are home, they have a local group of friends they perform with and the last couple of years they have started putting on shows each christmas. They are all very talented and its a nice intimate performance in the heart of the mission in SF. Here is a link to their website. You can buy tickets online. If you have any questions, let me know. I just want to help them spread the word.