As a joint promotion from Cineplex and Energizer batteries you can get a free movie ticket when you purchase 1 ticket. So if you find a specially marked pack of Energizer batteries get the pin code and enter it at the Energizer site and Energizer will send you a nice free printable coupon for you to be redeemed.
While in our house we probably buy batteries once every 4 months I think I might have a look for a new pack in order to claim this promotion.
T&C’s: “Limit of one (1) 2-for-1 Free Adult Movie Coupon per PIN# to be redeemed between March 22, 2010 and December 31, 2010. Maximum 20 coupons per person / email address. Open to legal residents of Canada who are over 13. ARV $12. Coupons valid at any participating. Canadian Cineplex Entertainment or Empire Theatres location – subject to restrictions.”