I received an email today with a discount code for Packers Tickets from http://www.greenbaypackersticket.com/ - I ordered with them once before so now I am on their email list (although, I don't get very many emails from them which is kind of nice).
For everyone not on the list the discount code is : IMBACK
It is valid until August 7th. If you are planning on going to a game at Lambeau this year, buy tickets now and use the code! For the referral section on the checkout form, you should totally write hot for the pack blog! Maybe they will give me some sort of ticket kick-back. I will let you know!