Department of English
Klingler College of Arts and Sciences
Links to professional organizations and colleagues
The Writing Center at the University of Wisconsin Madison
I may be biased because I worked there for many years, but this really is one of the best Writing Centers around--online or off. They maintain a lot of great resources on their webpage.
The Carnegie Foundation's Academy for the Scholarship of Teaching and Learning
I'm currently a Carnegie Scholar with the Foundation's CASTL program. They're great people doing great work in a great setting.