I believe this deal has run before. Buy 8 promotional pouch packets (Mars, Revels, Minstrels, M and Ms) and get 2 free cinema tickets for Cineworld. Tickets can be used Mon-Thurs.
Currently these packs are 2 for £2.50 in Somerfield (although Tescos and Sainsburys have done 2 for £2 in the past). This means for £10 I get a shed load of chocolate and 2 cinema tickets worth up to £14. Surely thats a hot deal!!!!