Microsoft announced last week that it would be giving away free 3-month Zune Passes to customers who sign up for Windows Phone 7 pre-order notifications and then go on to place pre-orders. AT&T apparently wants in on the action as well, as the carrier plans to give away a free “Entertainment Pack” with each Windows Phone 7 device purchase. The pack consists of a 1-month Zune Pass with 10 free song downloads, a month of U-verse Mobile service and a free copy of the 3-D puzzle game ilomilo. The deal sounds pretty sweet, though takers should note that unless the service is canceled, they will automatically get charged a $10 monthly subscription fee after their free 30-day U-verse Mobile trials expire. Ahhh… nothing like a good old fashioned Columbia House scam to welcome people to the new Windows Phone 7 family.