This might be of some use to somebody. I got this coupon when I was waiting in line to get a PSP when it first came out. It doesn't expire until 12/31/05.

Excludes prior purchases and special orders, clearance, demo and open-box items. Limit 1 offer per coupon per household. Not good in combination with any other coupons or offers. Valid only at Best Buy stores in the USA. Valid on in-stock items only. No Rainchecks. No dealers. Coupone must be presented at time of purchase. No Copies.

That last restriction about no copies cracks me up cuz the original coupon i got was a copy so i don't know how they're gonna differentiate their copies from mine.
.pdf coupon