Slightly different from the 3 months free vouchers kicking about for ScreenSelect/Lovefilm (Same company). This one gets you 5 free dvd rentals and a voucher for a free bottle of Ernest and Julio Gallo Turning Leaf Wine (Red or White up to the value of £5.99).
Usual stuff, sign up. Select some crap dvds, make sure you return them and cancel before the trial is up and get your free voucher then escape. This one's only valid for new members though so no old accounts allowed to be reactivated.
Simply sign up at http://www.screenselect.co.uk/wine
It even says that you can cancel and still receive your voucher. Voucher is valid in any high street store stocking it apparently.