Hi J! I just found out that you can get cheap BCC movie tickets, that work at the Hyperdome too, just by going to this site and printing out the coupons!
(Or you can google 'clever coupons'.)
I hadn't known about it until yesterday, and we've be using $9.50 Diggers cards for ages and thinking they were a good deal! The movie cards from this site are $7.50 at the moment, but are sometimes only $6.50. Each coupon is for 4 tickets, and they take it from you at the ticket office.
Definitely worth a look if you didn't know about this already.