here are some of mine that i use. most of all these are mobile versions of websites because i like the cleaner look of the sites and not really many ads and not to mention load faster
http://en.m.wikipedia.org (mobile version of wikipedia)
http://www.google.com/m (mobile version of google)
http://foxnews.mobi
http://m.cnet.com/site?sid=cnet
mail.google.com/mail/x/
https://www.google.com/voice/m
http://maps.google.com/m
http://m.blb.org (bible/dictionary/concordance/etc.)
http://images.google.com/m
http://news.google.com/m
http://touch.facebook.com/login.php (m.facebook.com always gave me problems with the input but the touch version i think looks nicer and easier to use. )
http://www.amazon.com/gp/aw/h.html
http://newadvent.org/cathen/ (works well with the kindle article mode)