You'd be surprised

From "Comics Grammar and Tradition":

DOUBLE DASH
There is no Em or En dash in comics. It's always a double dash and it's only used when a character's speech is interrupted. The double dash and the ellipsis are often mistakenly thought to be interchangeable. That's not the case in comics, even though it's rife in comic scripts. For the record, there are only TWO dashes in a double dash. It sounds like common sense, but you'd be surprised.

(I am a heavy em-dash user, as these are easily generated on Macs by hitting apple-option-hyphen; unfortunately, one of my e-mail accounts transforms my meticulous emdashery into question markery, making it look like I am casting doubt on every other statement!)

(Via Jenny D; I also realize that I am mimicking her style.)

He means the 'Ghost'?

A pilcrow is one of these: ¶. I didn’t know that. The little printer’s mark is unvoiced but eloquent, sundering streams of prose, heralding new paragraphs or staking out subclauses. It crops up often in legal and academic documents, but in fiction you would only expect to see one as an avant-garde manoeuvre, pegged into a page by an author who wanted to interrupt a conventional illusion, to alert the reader to something imposed or artificial. I suspect McSweeney’s uses them a lot. —Keith Miller, "The Clever Nostalgia of Adam Mars-Jones," TLS, March 26, 2008

UPDATE: Saki Knafo, aka the greatest journalist in the world, found this punctuational free-for-all in an AP story. Here Shaquille O'Neal appears to be visualizing his words in cartoon bubbles:

Of Riley's comments, O'Neal said colorfully, "I don't [care] how he interpreted it."

Reminded that reporters couldn't use the quote because of the expletive, he said, "Sure you can. You can quote me, brother. You can put an 's,' then the tic-tac-toe, the 'at' sign and then the other symbols."