I found out via Elisa Gabbert about the poet K. Silem Mohammad's "Sonnagrams," which are exact anagrams of Shakespeare sonnets; from the author's note, "The title is composed last, using whatever letters are left over once I’ve assembled a working sonnet." Here are some at Boo magazine; here are some more at Wag's Revue; they're all quite remarkable if you like stunt poems, and some of them are great in a surrealistic way even if you don't. Here's one:
My, You Annoy Me, Funny Daddy Roy: Yes, You of Uneasy Eye (Eye of Yore)
Wise fools who rub the curly heads of state,
Sweet monsters who sell honor out for fun:
Now by my learned counsel be set straight,
And board a flying saucer for the sun.
Lifesaver, doughnut, onion ring, or halo;
Lacuna, vacuum, emptiness, or hole—
The UFOs in Limbo hover way low;
In Purgatory, langue’s denied parole.
I know a word the OED omits:
Its syllables are fatal to be heard.
Whoever says it retches, dies, and shits;
I urge you not to utter such a word.
Although you feel the author’s days are through,
The author in the end erases you.
And here's another (which I hesitated about posting because of possible search-engine repercussions):
WWW (I Heil My, My, My Hitler; I Heel My Whiny Cur; I Wrap My Rueful Vulva in My Limp, Unholy Fur)
You few non-nude and many naked elk,
Who, in your ludic pastures over yon,
Fear not the mad Behemoth’s flailing whelk
That abrogates our fretful Helicon:
You indolent nude teens who always flee
Redactions of a crude antithesis:
The symmetry of progress yet must be
The progress of a symmetry (like this).
If ponies value nudity, they do
As Puritans do patriotic rap;
You hear this said, and know it to be true,
As if it were a boner in your lap.
For nudity is only true in porn;
For why was Woodrow Wilson ever born?