Sainsbury's Life insurance (provided by Legal and General) can help protect your family or your mortgage from only £5 a month and if you take out a policy online by 14th July 2008, you'll receive a £50 Sainsbury's voucher
I think this may have been posted before but it looks like they have just re-launched with a new, improved incentive. I took this out last month when it was 3000 nectar points (£15) so I obviously wish I had waited! C'est la vie!
Add in the £80 you get for going through quidco and thats effectively £130 cashback.
I obviously wouldn't condone abuse of such offers (!) but even if you kept the insurance for a year you could in effect get free insurance and up to £70 in you pocket....