I guess I disagree with Steve a little on this one as I believe that documentation/comments should be written so someone below your level can understand the code. I worked for/with an excellent developer who did not document well and know I am back as a contractor working on his code and it is taking 2 or 3 times as long to debug because the lack of documentation or because of documentation that was never updated as code and processes were changed.

I know that documentation and commenting is a weak area in my coding as well and I am trying to get better at it.