I remember when the days of finding a fresh, fast, geographically local anonymous proxy to surf behind were fraught with difficulties. Some Russians ran a list I used, but it was often out-of-date and the proxies on it didn't work for long.
I now go here for a fresh proxy when I need one:
http://www.ip-adress.com/proxy_list/
That site also allows you to test a proxy for Reverse DNS, actual location and so on, right from the list.
These are HTTP proxies mainly, rather than SOCKS5 ones which you might want if you need a full range of ports from Windows, but they suit my needs, getting me out of corporate networks and around restrictive ISPs, etc. I expect I will use them heavily whilst travelling when I come across certain states which are somewhat restrictive about where their citizens might surf. Like Western news websites.