Working Mother magazine. Fill out a short survey about handbags and you get a choice of getting a free subscription or a free week at 24 Hour Fitness.
Bassmaster magazine. Free 2 year subscription. Maybe for Dad?
Entertainment Book. Get the 2008 book for free but shipping and handling is $9.98. They will automatically bill you for the 2009 book next year unless you call to cancel and pay a $5 cancellation fee. With the Entertainment Book you also get free 3 mth subscriptions to 3 magazines of your choice.
I haven't tried any of this but this site http://www.all-freemagazines.com/ says they have a lot of magazines that you can get a 1 year subscription for free.