I've been continuing my policy of automatically throwing away any mail that comes from Delaware, but one credit card offer made it past my postal spam filter today. It was from Bank of America (in, sigh, Delaware, but the address was on the back). They had actually printed a picture of what looked like the kind of marks that a hard plastic credit card would make when going through dirty machinery. There was a dusty outline of a card, with dark blurry letterforms that very well could have been my name "imprinted" into the paper, all drawn on top of the text DO NOT FOLD. It all looked quite believable; believable enough that I didn't leave it in the recycling bins near my mailbox.
Update: I found a picture of this particular advertisement, courtesy Google. It's very amusing.