Basically order a sim car (or upto 3) and top up by £15 and o2 will send you a copy of the new twilight film, i know you can buy it cheaper than that but you still get all the benifits of the £15 top up to! can't be bad can it.
Top up On top of your credit you get:
£10 - £14 Unlimited texts O2 to O2
£15+ Unlimited UK calls and texts O2 to O2