I received my first-ever NPN in the mail yesterday. It was from Topps '06 Series 2 - a Constitution card of John Blair. I already had that particular card, but it was still cool to get a card for free in the mail.
Then today I got another envelope from Topps containing a better card than the one I got yesterday. It's from the '06 Co-Signers set. As best as I can tell it's this card:
2006 Topps Co-Signers Changing Faces Silver Bronze: 52B D.Ortiz w/ C.Schilling. It's valued at $4, and it's numbered 30/125.