Yesterday I read Goffman's Stigma: Notes on the Management of Spoiled Identity for what I believe was the fourth time. The first time in college, after having enjoyed Asylums. The second time preparing for my orals. The third time for a deviance class I was teaching, and now, to go through concepts I will specifically reference and work with in the dissertation.
It's a great little book. (Although after all these years my copy is rather worse for wear.)