For 20 cokezone points (which is a couple of fridge packs worth, around a fiver on offer), you can get a voucher for £10 off at the EA store.
When they introduced this, it was a bit pointless because the EA store had very few games that were not overpriced by at least a tenner anyway.
Now though there's a good selection of games at £9.99 or less: better yet, with the code, they are completely free! So, any of the following for 20 cokezone points:
Battlefield 1943 (preorder)
Tiger Woods PGA Tour 08
Need for Speed Carbon
Black and White® 2: Battle of the Gods (Expansion pack)
The Godfather The Game
NBA Live 08
The Lord of the Rings®, The Battle for Middle-earth II, The Rise of the Witch-king
I've had myself a couple of copies for battlefield 1943 on pre order, for myself and housemate!
An offers page for games under £10 lists most of these, but there are others lurking about the store:http://eastore.ea.com/store/eaemea/cat/offers/categoryID.14365500