I don't see this deal setting the world on fire, but...
If you haven't yet got into the re-imagined Battlestar Galactica, now's your chance. Pre-order this 15-disc boxset of all three seasons so far. Two ways to get it for a good price:
DVD.co.uk are selling it at £49.99 - use Quidco to get it for £47.99.
Virgin are selling it for £49.00 - use your Virgin Credit Card to get 10% off, making it £44.10 (Virgin Megastores are no longer on Quidco)
To buy all three seasons separately, at the cheapest prices I can see them, would be £67.72 - so a potential saving of over £23 if you have a Virgin Credit Card, and nearly £20 even if you don't!