Newsgroups

• alt.movies.kubrick
  An excellent place to discuss 2001 and all of Stanley Kubrick's other films. The group's FAQ contains a detailed analysis of 2001, as well as the resto of Stanley Kubrick's work.

• alt.books.arthur-clarke
  A great place to discuss the literature of Arthur C. Clarke.

• rec.arts.sf.movies
  Usually someone has something to say on this newsgroup about 2001. If you disagree, be prepared for lots of flames.