Must I fill this in now?
Then what are the other questions for?

我为什么加入 Couchsurfing

To meet people. Why else?

兴趣

Stamp collecting and basket weaving.
Oh, and tax returns.

音乐、电影和书籍

I play the 5-string banjo, and can noodle on anything with strings.

My favourite film is 'Who's Afraid of Virginia Wolf', for the racy dialogue and poisonous tension between Richard Burton and Liz Taylor: https://youtu.be/nInE5TITzE8.

From a purely visual perspective (socio-political implications aside), I can't go past the birch forest kiss from 'Ivan's Childhood': https://youtu.be/1plWZqqVbr0

I would never pick a favourite book.
...Although, if I did, it would probably be George Orwell's 'Nineteen Eighty-Four'. I used to read a lot as a kid but I think this one probably had the most profound influence on my thought and philosophy for years afterward.

我做过的一件不可思议的事情

Anything can be awe-inspiring if you've had a good hearty breakfast and a cup of coffee.
Try smearing your face and chest with battery acid for a different perspective on life.

教，学，和分享

I am happy to teach people anything, although my advice should always be taken with a grain of salt. I am always glad to share my knowledge, and as glad to learn new things.
Two things I do know an awful lot about are:

+Clawhammer banjo and
+Large format photography

If either of those left you scratching your head I suggest you put your wikipedia hat on and offer me your couch.

我可以与沙发主分享些什么

An affable smile and a cordial demeanour.

我游览过的国家

Canada, England, France, Guatemala, India, Indonesia, Ireland, Israel, Italy, Japan, Poland, Scotland, Switzerland, United States

我居住过的国家

Australia, Canada, Ireland