Apart from the webpages you mention, there's also Douglas Hofstadter's book Gödel, Escher, Bach. For perl specifically, there's my Short quines.

Update: These days I also started to like quines that look like this: 

print+("\\","\"",",","print+(",")[3,1,0,0,1,2,1,0,1,1,2,1,2,1,2,1,3,1,
+2,1,4,1,4]")[3,1,0,0,1,2,1,0,1,1,2,1,2,1,2,1,3,1,2,1,4,1,4]

[download]

Update 2010-01-28: These unpack quines by mtve below are nice. Here's my attempt. 

print unpack a44X44a43xaXXaaXaXaxaXaX4axa, "print unpack a44X44a43xaXX
+aaXaXaxaXaX4axa, \"\\\nn"

[download]

Or, if you don't need the newline, this works too. 

print unpack a35X35a34xaXXaaXaXXa,"print unpack a35X35a34xaXXaaXaXXa,\
+"\\"

[download]

Update 2012-12-12: see also General quine, Short quines.

In reply to Re: How I Learned About Quines by ambrus
in thread How I Learned About Quines by blakew

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