I found out "Smarties" in the US are like sweet pucks of coloured sugar? In Canada they are more like M&M's... hard cover and full of chocolate. Anyway, here's an interesting website: http://www.canadaonly.ca/
Are Smarties available in the US now? My husbands brother moved to NYC and says he can't find Smarties there anywhere. If so thats one thing. Hopefully others will chime in with things you can't get there that you can get here in Canada - may be difficult because usually its the other way around!