This gave me a difficult decision between Meditations and Obfuscated Code.

Obfuscated Code has lost of gems, and you can even learn things from some of them, but I finally chose Meditations because obfuscations would exist even without this section of the monastery, but it would be impossible to gather so many interesting writeups about perl if this section didn't exist.

Apart from the Polls, I'm also missing the Sitefaqlets from the list.