Chillingeffects.org
 

http://www.chillingeffects.org

Has the Scientology Complaint letters that was sent to Google.
Lots of C&D letters sent from some big companies. The funny thing is that it looks like it's only the adult sites that has been taken seriously by those who received the letter.

#1 ALS Scan sent a letter to someone that had stolen his pictures, that site is a 404 now.
#2 XPays sent a C&D letter to XXXPays, copyright infringement. XXXPays redirects to Xpays now.

I looked at 3 non-adult ones that was sent a C&D letter.
EnronownstheGOP.com, still exist.
Netfunny.com got a C&D from Mastercard, they still exist.
aibopet.com was told by Sony to remove a bunch of copyrighted files, some are taken away, site still exist.

Some pretty interesting stuff at that site.