Just a note on the packing list:
Although not listed,
DO bring your own water bottle. It'll prove to be a big-time life/time-saver. (Without your own you'll have to do the first several trail runs without a water bottle, plus all water bottles bought up there are identical so get lost/confused easily).
Write your name on the labels for your sheets, pillow cases, and pillows. They will at some point get swapped around accidentally/as a prank.
Bring running shoes with GOOD grips - when you do the shuttle run you don't want to be sliding around at the turns like me.
You're allowed two blankets - one navy-blue. That'll be your 'official' blanket ie. the blanket you'll use to make the military-standard beds (with the 'smiley pillows', hospital corners, '12 inch - 6 inch' etc.). For your second blanket, get it of a color of your choice (you'll just fold it up and place it at the foot of your bed), and get a WARM blanket. During NOV and DEC the dorm rooms tend to get cold at night despite the heating systems.
Bringing Underarmor underwear/tights will help a lot when running in the cold/snow.
Get your Dictionary off Amazon.com.... You don't really use it too much, plus they've got stacks and stacks of them over in the English room. You can get awesome deals online rather than at a bookstore.
DO bring your share of cold/headache medicines - there was an outbreak of the flu(?) last year, and a lot of people had to stay in the dorms. If they didn't bring anything, it's to your benefit, as fellow dorm mates, to give them something for it.
I brought snoring earplugs - turned out to be a good investment in the end. For intensive days, getting your sleep is crucial.
Get fairly sturdy/thick work gloves. You'll be doing various exercises in the mountains, and the sharp twigs/rocks will go straight through the flimsy ones.
Cellphone - cell reception up there is pretty bad. T-mobile doesn't get any. Verizon seemed to get the most.
Tupperware for goodies... if you're expecting a lot of care packages from home, do bring a lot of tupperware. Ants WILL (without exception over the four months) find any open food packages, bring along an entire army, and raid it. Gross.
Bring plenty of paper. And I mean plenty. You'll use them up really quickly during English.
Get a fairly sturdy ruler. I got a stainless-steel ruler and that seemed to do the trick. It's your lifeline in English and you do NOT want to snap it, like my buddy who was sitting next to me...
Bring LOTS of coat hangars - the supplies at NWP were fairly limited, and with the small amount of place you're designated to put stuff on, you'll want to hang up all of your shirts/pants/ties/jackets.
That's all I can come up with at the moment... if I think of anything else I'll post it up. Good luck to all of the future NWPers!