Tesco are selling Maltesers & Minstrels in a 3 Pack x 37G for £1.
The ones that they are selling at the moment include the 3 packs which have the Blockbuster promotion on. This allows you to use the three codes on the individual packs to get a free Movie rental at Blockbuster.
I beleive you enter the codes online to download the voucher and take this into store.
I think this is a really good deal as you get the sweets and the rental voucher.