official Sonic Merchandise store, just in time for Christmas! While there is nothing there that is exclusive to the website, plus in some cases you will be able to pick this stuff up cheaper elsewhere, it's nice to see everything on one place: All the school gear, t-shirts, action figures, posters, the chess set, Radio controlled cars, and even DVD box sets of almost all the Sonic cartoons (not including Sonic X).
They also have a points system so when you purchase from there you get a fraction of your money back in points. So far the site is available for the UK, France, Germany and Spain with the choice of listing everything by Pounds of Euros. Not sure if those outside those countries can also order, I guess you lot will have to find out for yourselves!