I was chatting on lebeautemps journal about sugar-free cooking, and kasku recommended Smuckers sugar-free products, as they use sucralose as their sweetener (unlike lots of diabetic things which use polyols or seem to think that fructose doesn't cause an insulin reaction). Smuckers don't sell through shops in the UK, but 5 minutes of googling found some of their sugar-free apricot preserve on ebay, with the result that I am having jam on toast for the first time in about 5 years.
A few months back, Warren Ellis posted about some comic he'd been influenced by back in the 80s. Long out of print, of course, and utterly uncollected. Thirty seconds on eBay, nevertheless, dug me up a copy belonging to someone in the USA, and 5 days later it arrived through my front door, so that I could could read it once and completely fail to be blown away by it.
I'm sure that to many of the privileged people of the modern world this doesn't feel amazing at all, and that they are currently nodding their heads and muttering "Why, yes, the motor car _is_ capable of travelling faster than a horse drawn carriage." but I still feel a vague sense of awe at how a bunch of loosely connected systems (manufacturing plants in the far east, comics collectors in America, jam importers in the south of England) can be joined up by the internet to bring useful and interesting things in through my door at the touch of a button.