Well, not exactly for free, I guess. But right now if you spend $75+ at DisneyShopping, you can get a certificate for 2 tickets to WALL-E. Just use coupon code WALLETKTS.
(Side note: They emailed me this promotion, and while I skimmed the mail I wondered what in the world wallet kits were. Heh.)
If you haven’t yet seen WALL-E, prepare to have your socks charmed off. I rarely spring for full-price movie tickets, but the entire family loved it.