You may dimly be aware of a class action suit against Virgin Atlantic and British Airways regarding collusion over 'fuel duty' expenses. To claim a refund, you have to go to their website, and fill in details on all flights that you took with the airlines between August 2004 and summer 2006. But what kind of anal retentive has enough information stored to be able to remember that kind of detail nearly four years later?
Well, apparently I do. I went to my spreadsheet that lists which flights I took and when (I keep it partly to tally my carbon footprint, but not to make any attempt to remedy it), and looked up the dates in question. The only flights I would have taken would have been transatlantic, US to UK. This told me when I could have taken flights, but not the carrier. For that, I dug out my credit card receipts from the months in question, and looked up the details of who I travelled with, and when. This included one flight on Virgin in December '04. So I filled the details in to the website, and sent it off. In sixth months time, I confidently expect to receive a rebate cheque. Since the total cost of the flight was $300 at the time, the rebate amount could be at most a dollar or two. So, more good uses of my time, I guess.