on another forum (one for general gardening, with a little teeny section for CPs), somebody posted this link to a picture of a partially-digested mouse inside a Nepenthes truncata pitcher. (yum!)
another person (an administrator for the board, actually) replied that neps catch mice/voles/baby birds regularly, and some people actually feed them pinkie mice.
just have to make sure, though, before I reply: "aaah! no! don't!!". the fat content would be way too high, wouldn't it? I've never heard of anyone feeding their neps pinkies, have you?