Recursion and humor
It is hard to resist passing on various recursion-related humor. This is a short discussion of recursion and how humor has been applied to it. Sources of recursion humor can be a found at:
For example, if you google the term, recursion, you can get the following response:

In some books, an index for the term recursion will sometimes include the current page number. You may find an entry for recursion which leads to itself:
Recursion – See Recursion
Found in several places, including some T-shirts, is the following:

Recursive acronyms are fairly common. One list can be found at http://en.wikipedia.org/wiki/Recursive_acronym. Perhaps one of the best-known recursive acronyms is for GNU: GNU's Not Unix.
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