We've created, appointed, or otherwise identified certain question/answer pairs that are the [canonical answer][1] for certain problems.  A list of these problems is given in the accepted answer below.

Please:

- Post an Answer to nominate a question for inclusion. Questions explicitly posted for the purpose of creating a canonical Question/Answer can skip this.
- Delete content that has been merged into the official list. Try to keep this post neat and tidy.

  [1]: http://blog.stackoverflow.com/2011/01/the-wikipedia-of-long-tail-programming-questions/