One of my favorite sites is
www.wsj.com. The website detects that I'm coming in from the mobile version of Internet Explorer and formats the information accordingly.
A huge irritant is that none of the MSDN blogs: blogs/msdn.com/xxx autodetect for mobile browsers and reformat for optimal viewing. Not even the MSDN blogs concerned with Windows Mobile and related topics. That is so strange.
Thank goodness there are the Thoughts Media sites which set the standard for mobile viewing (including the forums).